diff --git a/python/core/auto_generated/editform/qgsattributeeditorcontainer.sip.in b/python/core/auto_generated/editform/qgsattributeeditorcontainer.sip.in
index 0a919b44876..283f518094e 100644
--- a/python/core/auto_generated/editform/qgsattributeeditorcontainer.sip.in
+++ b/python/core/auto_generated/editform/qgsattributeeditorcontainer.sip.in
@@ -52,6 +52,28 @@ Returns if this container is going to be rendered as a group box
 :return: ``True`` if it will be a group box, ``False`` if it will be a tab
 %End
 
+    bool collapsed() const;
+%Docstring
+For containers rendedered a group box returns if this group box is collapsed.
+
+:return: ``True`` if the group box, ``False`` otherwise.
+
+.. seealso:: :py:func:`collapsed`
+
+.. seealso:: :py:func:`setCollapsed`
+
+.. versionadded:: 3.26
+%End
+    void setCollapsed( bool collapsed );
+%Docstring
+For containers rendedered a group box sets if this group box is ``collapsed``.
+
+.. seealso:: :py:func:`collapsed`
+
+.. seealso:: :py:func:`setCollapsed`
+
+.. versionadded:: 3.26
+%End
     QList<QgsAttributeEditorElement *> children() const;
 %Docstring
 Gets a list of the children elements of this container
@@ -112,6 +134,26 @@ show or hide this container based on an expression incorporating
 the field value controlled by editor widgets.
 
 .. versionadded:: 3.0
+%End
+
+    QgsOptionalExpression collapsedExpression() const;
+%Docstring
+The collapsed expression is used in the attribute form to
+set the collapsed status of the group box container container based on an expression incorporating
+the field value controlled by editor widgets. This property is ignored if the container is not
+rendered as a group box.
+
+.. versionadded:: 3.26
+%End
+
+    void setCollapsedExpression( const QgsOptionalExpression &collapsedExpression );
+%Docstring
+The visibility expression is used in the attribute form to
+set the collapsed status of the group box of this container based on an expression incorporating
+the field value controlled by editor widgets. This property is ignored if the container is not
+rendered as a group box.
+
+.. versionadded:: 3.26
 %End
 
     QColor backgroundColor() const;
diff --git a/src/core/editform/qgsattributeeditorcontainer.cpp b/src/core/editform/qgsattributeeditorcontainer.cpp
index aa3594c33e4..32a117d4efc 100644
--- a/src/core/editform/qgsattributeeditorcontainer.cpp
+++ b/src/core/editform/qgsattributeeditorcontainer.cpp
@@ -45,6 +45,19 @@ void QgsAttributeEditorContainer::setVisibilityExpression( const QgsOptionalExpr
   mVisibilityExpression = visibilityExpression;
 }
 
+QgsOptionalExpression QgsAttributeEditorContainer::collapsedExpression() const
+{
+  return mCollapsedExpression;
+}
+
+void QgsAttributeEditorContainer::setCollapsedExpression( const QgsOptionalExpression &collapsedExpression )
+{
+  if ( collapsedExpression == mCollapsedExpression )
+    return;
+
+  mCollapsedExpression = collapsedExpression;
+}
+
 QColor QgsAttributeEditorContainer::backgroundColor() const
 {
   return mBackgroundColor;
@@ -107,6 +120,7 @@ QgsAttributeEditorElement *QgsAttributeEditorContainer::clone( QgsAttributeEdito
   element->mIsGroupBox = mIsGroupBox;
   element->mColumnCount = mColumnCount;
   element->mVisibilityExpression = mVisibilityExpression;
+  element->mCollapsed = mCollapsed;
 
   return element;
 }
@@ -116,6 +130,9 @@ void QgsAttributeEditorContainer::saveConfiguration( QDomElement &elem, QDomDocu
   Q_UNUSED( doc )
   elem.setAttribute( QStringLiteral( "columnCount" ), mColumnCount );
   elem.setAttribute( QStringLiteral( "groupBox" ), mIsGroupBox ? 1 : 0 );
+  elem.setAttribute( QStringLiteral( "collapsed" ), mCollapsed );
+  elem.setAttribute( QStringLiteral( "collapsedExpressionEnabled" ), mCollapsedExpression.enabled() ? 1 : 0 );
+  elem.setAttribute( QStringLiteral( "collapsedExpression" ), mCollapsedExpression->expression() );
   elem.setAttribute( QStringLiteral( "visibilityExpressionEnabled" ), mVisibilityExpression.enabled() ? 1 : 0 );
   elem.setAttribute( QStringLiteral( "visibilityExpression" ), mVisibilityExpression->expression() );
   if ( mBackgroundColor.isValid() )
@@ -143,6 +160,22 @@ void QgsAttributeEditorContainer::loadConfiguration( const QDomElement &element,
   else
     setIsGroupBox( mParent );
 
+  const bool isCollapsed = element.attribute( QStringLiteral( "collapsed" ) ).toInt( &ok );
+  if ( ok )
+    setCollapsed( isCollapsed );
+  else
+    setCollapsed( false );
+
+  const bool collapsedExpressionEnabled = element.attribute( QStringLiteral( "collapsedExpressionEnabled" ) ).toInt( &ok );
+  QgsOptionalExpression collapsedExpression;
+  if ( ok )
+  {
+    collapsedExpression.setEnabled( collapsedExpressionEnabled );
+    collapsedExpression.setData( QgsExpression( element.attribute( QStringLiteral( "collapsedExpression" ) ) ) );
+  }
+  setCollapsedExpression( collapsedExpression );
+
+
   const bool visibilityExpressionEnabled = element.attribute( QStringLiteral( "visibilityExpressionEnabled" ) ).toInt( &ok );
   QgsOptionalExpression visibilityExpression;
   if ( ok )
diff --git a/src/core/editform/qgsattributeeditorcontainer.h b/src/core/editform/qgsattributeeditorcontainer.h
index da42fb1bde6..a860d5aa161 100644
--- a/src/core/editform/qgsattributeeditorcontainer.h
+++ b/src/core/editform/qgsattributeeditorcontainer.h
@@ -66,6 +66,25 @@ class CORE_EXPORT QgsAttributeEditorContainer : public QgsAttributeEditorElement
      */
     virtual bool isGroupBox() const { return mIsGroupBox; }
 
+    /**
+     * For containers rendedered a group box returns if this group box is collapsed.
+     *
+     * \returns TRUE if the group box, FALSE otherwise.
+     * \see collapsed()
+     * \see setCollapsed()
+     * \since QGIS 3.26
+     */
+    bool collapsed() const { return mCollapsed; };
+
+    /**
+     * For containers rendedered a group box sets if this group box is \a collapsed.
+     *
+     * \see collapsed()
+     * \see setCollapsed()
+     * \since QGIS 3.26
+     */
+    void setCollapsed( bool collapsed ) { mCollapsed = collapsed; };
+
     /**
      * Gets a list of the children elements of this container
      *
@@ -127,6 +146,26 @@ class CORE_EXPORT QgsAttributeEditorContainer : public QgsAttributeEditorElement
      */
     void setVisibilityExpression( const QgsOptionalExpression &visibilityExpression );
 
+    /**
+     * The collapsed expression is used in the attribute form to
+     * set the collapsed status of the group box container container based on an expression incorporating
+     * the field value controlled by editor widgets. This property is ignored if the container is not
+     * rendered as a group box.
+     *
+     * \since QGIS 3.26
+     */
+    QgsOptionalExpression collapsedExpression() const;
+
+    /**
+     * The visibility expression is used in the attribute form to
+     * set the collapsed status of the group box of this container based on an expression incorporating
+     * the field value controlled by editor widgets. This property is ignored if the container is not
+     * rendered as a group box.
+     *
+     * \since QGIS 3.26
+     */
+    void setCollapsedExpression( const QgsOptionalExpression &collapsedExpression );
+
     /**
      * \brief backgroundColor
      * \return background color of the container
@@ -149,6 +188,8 @@ class CORE_EXPORT QgsAttributeEditorContainer : public QgsAttributeEditorElement
     int mColumnCount;
     QgsOptionalExpression mVisibilityExpression;
     QColor mBackgroundColor;
+    bool mCollapsed = false;
+    QgsOptionalExpression mCollapsedExpression;
 };
 
 
diff --git a/src/gui/attributeformconfig/qgsattributeformcontaineredit.cpp b/src/gui/attributeformconfig/qgsattributeformcontaineredit.cpp
index 2e17a759b84..46a51966b4a 100644
--- a/src/gui/attributeformconfig/qgsattributeformcontaineredit.cpp
+++ b/src/gui/attributeformconfig/qgsattributeformcontaineredit.cpp
@@ -31,28 +31,36 @@ QgsAttributeFormContainerEdit::QgsAttributeFormContainerEdit( QTreeWidgetItem *i
   {
     // only top level items can be tabs
     // i.e. it's always a group box if it's a nested container
-    mShowAsGroupBoxCheckBox->hide();
-    mShowAsGroupBoxCheckBox->setEnabled( false );
+    mShowAsGroupBox->hide();
+    mShowAsGroupBox->setEnabled( false );
   }
 
   mTitleLineEdit->setText( itemData.name() );
   mShowLabelCheckBox->setChecked( itemData.showLabel() );
   mShowLabelCheckBox->setEnabled( itemData.showAsGroupBox() ); // show label makes sense for group box, not for tabs
-  mShowAsGroupBoxCheckBox->setChecked( itemData.showAsGroupBox() );
+  mShowAsGroupBox->setChecked( itemData.showAsGroupBox() );
 
   mControlVisibilityGroupBox->setChecked( itemData.visibilityExpression().enabled() );
   mVisibilityExpressionWidget->setLayer( layer );
   mVisibilityExpressionWidget->setExpression( itemData.visibilityExpression()->expression() );
   mColumnCountSpinBox->setValue( itemData.columnCount() );
   mBackgroundColorButton->setColor( itemData.backgroundColor() );
+  mCollapsedCheckBox->setChecked( itemData.collapsed() );
+  mCollapsedCheckBox->setEnabled( itemData.showAsGroupBox() );
+  mControlCollapsedGroupBox->setChecked( itemData.collapsedExpression().enabled() );
+  mControlCollapsedGroupBox->setEnabled( itemData.showAsGroupBox() );
+  mCollapsedExpressionWidget->setExpression( itemData.collapsedExpression()->expression() );
 
   // show label makes sense for group box, not for tabs
-  connect( mShowAsGroupBoxCheckBox, &QCheckBox::stateChanged, mShowLabelCheckBox, &QCheckBox::setEnabled );
+  connect( mShowAsGroupBox, &QCheckBox::toggled, mShowLabelCheckBox, &QCheckBox::setEnabled );
+  connect( mShowAsGroupBox, &QCheckBox::toggled, mCollapsedCheckBox, &QCheckBox::setEnabled );
+  connect( mShowAsGroupBox, &QCheckBox::toggled, mControlCollapsedGroupBox, &QCheckBox::setEnabled );
 }
 
 void QgsAttributeFormContainerEdit::registerExpressionContextGenerator( QgsExpressionContextGenerator *generator )
 {
   mVisibilityExpressionWidget->registerExpressionContextGenerator( generator );
+  mCollapsedExpressionWidget->registerExpressionContextGenerator( generator );
 }
 
 void QgsAttributeFormContainerEdit::updateItemData()
@@ -60,7 +68,7 @@ void QgsAttributeFormContainerEdit::updateItemData()
   QgsAttributesFormProperties::DnDTreeItemData itemData = mTreeItem->data( 0, QgsAttributesFormProperties::DnDTreeRole ).value<QgsAttributesFormProperties::DnDTreeItemData>();
 
   itemData.setColumnCount( mColumnCountSpinBox->value() );
-  itemData.setShowAsGroupBox( mShowAsGroupBoxCheckBox->isEnabled() ? mShowAsGroupBoxCheckBox->isChecked() : false );
+  itemData.setShowAsGroupBox( mShowAsGroupBox->isEnabled() ? mShowAsGroupBox->isChecked() : false );
   itemData.setName( mTitleLineEdit->text() );
   itemData.setShowLabel( mShowLabelCheckBox->isChecked() );
   itemData.setBackgroundColor( mBackgroundColorButton->color() );
@@ -70,6 +78,12 @@ void QgsAttributeFormContainerEdit::updateItemData()
   visibilityExpression.setEnabled( mControlVisibilityGroupBox->isChecked() );
   itemData.setVisibilityExpression( visibilityExpression );
 
+  QgsOptionalExpression collapsedExpression;
+  collapsedExpression.setData( QgsExpression( mCollapsedExpressionWidget->expression() ) );
+  collapsedExpression.setEnabled( mControlCollapsedGroupBox->isChecked() );
+  itemData.setCollapsedExpression( collapsedExpression );
+  itemData.setCollapsed( mCollapsedCheckBox->isEnabled() ? mCollapsedCheckBox->isChecked() : false );
+
   mTreeItem->setData( 0, QgsAttributesFormProperties::DnDTreeRole, itemData );
   mTreeItem->setText( 0, itemData.name() );
 }
diff --git a/src/gui/qgsattributeform.cpp b/src/gui/qgsattributeform.cpp
index 0032caef69a..b52ffaa6081 100644
--- a/src/gui/qgsattributeform.cpp
+++ b/src/gui/qgsattributeform.cpp
@@ -59,7 +59,6 @@
 #include <QFile>
 #include <QFormLayout>
 #include <QGridLayout>
-#include <QGroupBox>
 #include <QKeyEvent>
 #include <QLabel>
 #include <QPushButton>
@@ -1088,7 +1087,7 @@ void QgsAttributeForm::updateConstraints( QgsEditorWidgetWrapper *eww )
 
     QgsExpressionContext context = createExpressionContext( ft );
 
-    // Recheck visibility for all containers which are controlled by this value
+    // Recheck visibility/collapsed state for all containers which are controlled by this value
     const QVector<ContainerInformation *> infos = mContainerInformationDependency.value( eww->field().name() );
     for ( ContainerInformation *info : infos )
     {
@@ -1101,7 +1100,7 @@ void QgsAttributeForm::updateContainersVisibility()
 {
   QgsExpressionContext context = createExpressionContext( mFeature );
 
-  const QVector<ContainerInformation *> infos = mContainerVisibilityInformation;
+  const QVector<ContainerInformation *> infos = mContainerVisibilityCollapsedInformation;
 
   for ( ContainerInformation *info : infos )
   {
@@ -1224,9 +1223,9 @@ bool QgsAttributeForm::currentFormValuesFeature( QgsFeature &feature )
 
 void QgsAttributeForm::registerContainerInformation( QgsAttributeForm::ContainerInformation *info )
 {
-  mContainerVisibilityInformation.append( info );
+  mContainerVisibilityCollapsedInformation.append( info );
 
-  const QSet<QString> referencedColumns = info->expression.referencedColumns();
+  const QSet<QString> referencedColumns = info->expression.referencedColumns().unite( info->collapsedExpression.referencedColumns() );
 
   for ( const QString &col : referencedColumns )
   {
@@ -1611,9 +1610,9 @@ void QgsAttributeForm::init()
           tabWidget = nullptr;
           WidgetInfo widgetInfo = createWidgetFromDef( widgDef, formWidget, mLayer, mContext );
           layout->addWidget( widgetInfo.widget, row, column, 1, 2 );
-          if ( containerDef->visibilityExpression().enabled() )
+          if ( containerDef->visibilityExpression().enabled() || containerDef->collapsedExpression().enabled() )
           {
-            registerContainerInformation( new ContainerInformation( widgetInfo.widget, containerDef->visibilityExpression().data() ) );
+            registerContainerInformation( new ContainerInformation( widgetInfo.widget, containerDef->visibilityExpression().enabled() ? containerDef->visibilityExpression().data() : QgsExpression(), containerDef->collapsed(), containerDef->collapsedExpression().enabled() ? containerDef->collapsedExpression().data() : QgsExpression() ) );
           }
           column += 2;
         }
@@ -2232,12 +2231,13 @@ QgsAttributeForm::WidgetInfo QgsAttributeForm::createWidgetFromDef( const QgsAtt
       QWidget *myContainer = nullptr;
       if ( container->isGroupBox() )
       {
-        QGroupBox *groupBox = new QGroupBox( parent );
+        QgsCollapsibleGroupBoxBasic *groupBox = new QgsCollapsibleGroupBoxBasic();
         widgetName = QStringLiteral( "QGroupBox" );
         if ( container->showLabel() )
           groupBox->setTitle( container->name() );
         myContainer = groupBox;
         newWidgetInfo.widget = myContainer;
+        groupBox->setCollapsed( container->collapsed() );
       }
       else
       {
@@ -2274,9 +2274,9 @@ QgsAttributeForm::WidgetInfo QgsAttributeForm::createWidgetFromDef( const QgsAtt
         if ( childDef->type() == QgsAttributeEditorElement::AeTypeContainer )
         {
           QgsAttributeEditorContainer *containerDef = static_cast<QgsAttributeEditorContainer *>( childDef );
-          if ( containerDef->visibilityExpression().enabled() )
+          if ( containerDef->visibilityExpression().enabled() || containerDef->collapsedExpression().enabled() )
           {
-            registerContainerInformation( new ContainerInformation( widgetInfo.widget, containerDef->visibilityExpression().data() ) );
+            registerContainerInformation( new ContainerInformation( widgetInfo.widget, containerDef->visibilityExpression().enabled() ? containerDef->visibilityExpression().data() : QgsExpression(), containerDef->collapsed(), containerDef->collapsedExpression().enabled() ? containerDef->collapsedExpression().data() : QgsExpression() ) );
           }
         }
 
@@ -2679,9 +2679,10 @@ void QgsAttributeForm::setExtraContextScope( QgsExpressionContextScope *extraSco
 
 void QgsAttributeForm::ContainerInformation::apply( QgsExpressionContext *expressionContext )
 {
-  bool newVisibility = expression.evaluate( expressionContext ).toBool();
 
-  if ( newVisibility != isVisible )
+  const bool newVisibility = expression.evaluate( expressionContext ).toBool();
+
+  if ( expression.isValid() && ! expression.hasEvalError() && newVisibility != isVisible )
   {
     if ( tabWidget )
     {
@@ -2694,6 +2695,19 @@ void QgsAttributeForm::ContainerInformation::apply( QgsExpressionContext *expres
 
     isVisible = newVisibility;
   }
+
+  const bool newCollapsedState = collapsedExpression.evaluate( expressionContext ).toBool();
+
+  if ( collapsedExpression.isValid() && ! collapsedExpression.hasEvalError() && newCollapsedState != isCollapsed )
+  {
+
+    QgsCollapsibleGroupBoxBasic *collapsibleGroupBox { qobject_cast<QgsCollapsibleGroupBoxBasic *>( widget ) };
+    if ( collapsibleGroupBox )
+    {
+      collapsibleGroupBox->setCollapsed( newCollapsedState );
+      isCollapsed = newCollapsedState;
+    }
+  }
 }
 
 void QgsAttributeForm::updateJoinedFields( const QgsEditorWidgetWrapper &eww )
diff --git a/src/gui/qgsattributeform.h b/src/gui/qgsattributeform.h
index 144651a4be6..5c4c90d2395 100644
--- a/src/gui/qgsattributeform.h
+++ b/src/gui/qgsattributeform.h
@@ -488,10 +488,21 @@ class GUI_EXPORT QgsAttributeForm : public QWidget
         , isVisible( true )
       {}
 
+      ContainerInformation( QWidget *widget, const QgsExpression &visibilityExpression, bool collapsed, const QgsExpression &collapsedExpression )
+        : widget( widget )
+        , expression( visibilityExpression )
+        , isVisible( true )
+        , isCollapsed( collapsed )
+        , collapsedExpression( collapsedExpression )
+      {}
+
+
       QgsTabWidget *tabWidget = nullptr;
       QWidget *widget = nullptr;
       QgsExpression expression;
       bool isVisible;
+      bool isCollapsed = false;
+      QgsExpression collapsedExpression;
 
       void apply( QgsExpressionContext *expressionContext );
     };
@@ -502,8 +513,8 @@ class GUI_EXPORT QgsAttributeForm : public QWidget
 
     void reloadIcon( const QString &file, const QString &tooltip, QSvgWidget *sw );
 
-    // Contains information about tabs and groupboxes, their visibility state visibility conditions
-    QVector<ContainerInformation *> mContainerVisibilityInformation;
+    // Contains information about tabs and groupboxes, their visibility/collapsed state conditions
+    QVector<ContainerInformation *> mContainerVisibilityCollapsedInformation;
     QMap<QString, QVector<ContainerInformation *> > mContainerInformationDependency;
 
     // Variables below are used for Python
diff --git a/src/gui/vector/qgsattributesformproperties.cpp b/src/gui/vector/qgsattributesformproperties.cpp
index 648fdd77f5b..f02c575b4be 100644
--- a/src/gui/vector/qgsattributesformproperties.cpp
+++ b/src/gui/vector/qgsattributesformproperties.cpp
@@ -479,6 +479,8 @@ QTreeWidgetItem *QgsAttributesFormProperties::loadAttributeEditorTreeItem( QgsAt
       itemData.setShowAsGroupBox( container->isGroupBox() );
       itemData.setBackgroundColor( container->backgroundColor() );
       itemData.setVisibilityExpression( container->visibilityExpression() );
+      itemData.setCollapsedExpression( container->collapsedExpression() );
+      itemData.setCollapsed( container->collapsed() );
       newWidget = tree->addItem( parent, itemData );
 
       const QList<QgsAttributeEditorElement *> children = container->children();
@@ -733,6 +735,8 @@ QgsAttributeEditorElement *QgsAttributesFormProperties::createAttributeEditorWid
       QgsAttributeEditorContainer *container = new QgsAttributeEditorContainer( item->text( 0 ), parent, itemData.backgroundColor() );
       container->setColumnCount( itemData.columnCount() );
       container->setIsGroupBox( forceGroup ? true : itemData.showAsGroupBox() );
+      container->setCollapsed( itemData.collapsed() );
+      container->setCollapsedExpression( itemData.collapsedExpression() );
       container->setVisibilityExpression( itemData.visibilityExpression() );
       container->setBackgroundColor( itemData.backgroundColor( ) );
 
@@ -1542,6 +1546,16 @@ void QgsAttributesFormProperties::DnDTreeItemData::setVisibilityExpression( cons
   mVisibilityExpression = visibilityExpression;
 }
 
+QgsOptionalExpression QgsAttributesFormProperties::DnDTreeItemData::collapsedExpression() const
+{
+  return mCollapsedExpression;
+}
+
+void QgsAttributesFormProperties::DnDTreeItemData::setCollapsedExpression( const QgsOptionalExpression &collapsedExpression )
+{
+  mCollapsedExpression = collapsedExpression;
+}
+
 QgsAttributesFormProperties::RelationEditorConfiguration QgsAttributesFormProperties::DnDTreeItemData::relationEditorConfiguration() const
 {
   return mRelationEditorConfiguration;
diff --git a/src/gui/vector/qgsattributesformproperties.h b/src/gui/vector/qgsattributesformproperties.h
index 3d9720e3d4e..9daddc52f95 100644
--- a/src/gui/vector/qgsattributesformproperties.h
+++ b/src/gui/vector/qgsattributesformproperties.h
@@ -137,11 +137,33 @@ class GUI_EXPORT QgsAttributesFormProperties : public QWidget, public QgsExpress
         bool showAsGroupBox() const;
         void setShowAsGroupBox( bool showAsGroupBox );
 
+        /**
+         * For containers rendedered a group box returns if this group box is collapsed.
+         *
+         * \returns TRUE if the group box, FALSE otherwise.
+         * \see collapsed()
+         * \see setCollapsed()
+         * \since QGIS 3.26
+         */
+        bool collapsed() const { return mCollapsed; };
+
+        /**
+         * For containers rendedered a group box sets if this group box is \a collapsed.
+         *
+         * \see collapsed()
+         * \see setCollapsed()
+         * \since QGIS 3.26
+         */
+        void setCollapsed( bool collapsed ) { mCollapsed = collapsed; };
+
         bool showLabel() const;
         void setShowLabel( bool showLabel );
 
         QgsOptionalExpression visibilityExpression() const;
-        void setVisibilityExpression( const QgsOptionalExpression &visibilityExpression );
+        void setVisibilityExpression( const QgsOptionalExpression &collapsedExpression );
+
+        QgsOptionalExpression collapsedExpression() const;
+        void setCollapsedExpression( const QgsOptionalExpression &collapsedExpression );
 
         RelationEditorConfiguration relationEditorConfiguration() const;
         void setRelationEditorConfiguration( RelationEditorConfiguration relationEditorConfiguration );
@@ -167,6 +189,8 @@ class GUI_EXPORT QgsAttributesFormProperties : public QWidget, public QgsExpress
         QmlElementEditorConfiguration mQmlElementEditorConfiguration;
         HtmlElementEditorConfiguration mHtmlElementEditorConfiguration;
         QColor mBackgroundColor;
+        bool mCollapsed = false;
+        QgsOptionalExpression mCollapsedExpression;
     };
 
 
diff --git a/src/ui/attributeformconfig/qgsattributeformcontaineredit.ui b/src/ui/attributeformconfig/qgsattributeformcontaineredit.ui
index 5694c5380c0..9cae8a00401 100644
--- a/src/ui/attributeformconfig/qgsattributeformcontaineredit.ui
+++ b/src/ui/attributeformconfig/qgsattributeformcontaineredit.ui
@@ -7,48 +7,14 @@
     <x>0</x>
     <y>0</y>
     <width>401</width>
-    <height>303</height>
+    <height>320</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string notr="true">Form</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <item row="3" column="0">
-    <widget class="QLabel" name="label_2">
-     <property name="text">
-      <string>Columns</string>
-     </property>
-    </widget>
-   </item>
-   <item row="0" column="0" colspan="2">
-    <widget class="QCheckBox" name="mShowLabelCheckBox">
-     <property name="text">
-      <string>Show label</string>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="0">
-    <widget class="QLabel" name="label">
-     <property name="text">
-      <string>Title</string>
-     </property>
-    </widget>
-   </item>
-   <item row="6" column="0">
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>20</width>
-       <height>40</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
-   <item row="4" column="0" colspan="3">
+   <item row="4" column="0" colspan="2">
     <widget class="QgsCollapsibleGroupBox" name="mControlVisibilityGroupBox">
      <property name="title">
       <string>Control Visibility by Expression</string>
@@ -63,27 +29,7 @@
      </layout>
     </widget>
    </item>
-   <item row="3" column="1">
-    <widget class="QgsSpinBox" name="mColumnCountSpinBox">
-     <property name="minimum">
-      <number>1</number>
-     </property>
-     <property name="maximum">
-      <number>10</number>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="1">
-    <widget class="QLineEdit" name="mTitleLineEdit"/>
-   </item>
-   <item row="1" column="0" colspan="2">
-    <widget class="QCheckBox" name="mShowAsGroupBoxCheckBox">
-     <property name="text">
-      <string>Show as group box</string>
-     </property>
-    </widget>
-   </item>
-   <item row="5" column="0" colspan="2">
+   <item row="9" column="0" colspan="2">
     <widget class="QgsCollapsibleGroupBox" name="mGroupBox">
      <property name="title">
       <string>Style</string>
@@ -102,20 +48,96 @@
      </layout>
     </widget>
    </item>
+   <item row="10" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="0" column="0" colspan="2">
+    <widget class="QCheckBox" name="mShowLabelCheckBox">
+     <property name="text">
+      <string>Show label</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
+    <widget class="QLabel" name="label_2">
+     <property name="text">
+      <string>Columns</string>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="1">
+    <widget class="QgsSpinBox" name="mColumnCountSpinBox">
+     <property name="minimum">
+      <number>1</number>
+     </property>
+     <property name="maximum">
+      <number>10</number>
+     </property>
+    </widget>
+   </item>
+   <item row="5" column="0">
+    <widget class="QCheckBox" name="mShowAsGroupBox">
+     <property name="text">
+      <string>Show as Group Box</string>
+     </property>
+    </widget>
+   </item>
+   <item row="2" column="1">
+    <widget class="QLineEdit" name="mTitleLineEdit"/>
+   </item>
+   <item row="2" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Title</string>
+     </property>
+    </widget>
+   </item>
+   <item row="6" column="0">
+    <widget class="QCheckBox" name="mCollapsedCheckBox">
+     <property name="text">
+      <string>Collapsed</string>
+     </property>
+    </widget>
+   </item>
+   <item row="7" column="0" colspan="2">
+    <widget class="QgsCollapsibleGroupBox" name="mControlCollapsedGroupBox">
+     <property name="title">
+      <string>Control Collapsed by Expression</string>
+     </property>
+     <property name="checkable">
+      <bool>true</bool>
+     </property>
+     <layout class="QGridLayout" name="gridLayout_4">
+      <item row="0" column="0">
+       <widget class="QgsFieldExpressionWidget" name="mCollapsedExpressionWidget" native="true"/>
+      </item>
+     </layout>
+    </widget>
+   </item>
   </layout>
  </widget>
  <customwidgets>
+  <customwidget>
+   <class>QgsSpinBox</class>
+   <extends>QSpinBox</extends>
+   <header>qgsspinbox.h</header>
+  </customwidget>
   <customwidget>
    <class>QgsCollapsibleGroupBox</class>
    <extends>QGroupBox</extends>
    <header>qgscollapsiblegroupbox.h</header>
    <container>1</container>
   </customwidget>
-  <customwidget>
-   <class>QgsSpinBox</class>
-   <extends>QSpinBox</extends>
-   <header>qgsspinbox.h</header>
-  </customwidget>
   <customwidget>
    <class>QgsFieldExpressionWidget</class>
    <extends>QWidget</extends>
@@ -131,10 +153,8 @@
  </customwidgets>
  <tabstops>
   <tabstop>mShowLabelCheckBox</tabstop>
-  <tabstop>mShowAsGroupBoxCheckBox</tabstop>
   <tabstop>mTitleLineEdit</tabstop>
   <tabstop>mColumnCountSpinBox</tabstop>
-  <tabstop>mControlVisibilityGroupBox</tabstop>
   <tabstop>mBackgroundColorButton</tabstop>
  </tabstops>
  <resources/>