diff --git a/resources/function_help/json/$atlasfeature b/resources/function_help/json/$atlasfeature
deleted file mode 100644
index 12706fdface..00000000000
--- a/resources/function_help/json/$atlasfeature
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "name": "$atlasfeature",
-  "type": "function",
-  "description": "In atlas generation, returns the current feature that is iterated over on the coverage layer. This can be used with the 'attribute' function to return attribute values from the current atlas feature.",
-  "examples": [ { "expression":"attribute( $atlasfeature, 'name' )", "returns":"value stored in 'name' attribute for the current atlas feature"}]
-}
-
diff --git a/resources/function_help/json/$atlasfeatureid b/resources/function_help/json/$atlasfeatureid
deleted file mode 100644
index 2d63080aa65..00000000000
--- a/resources/function_help/json/$atlasfeatureid
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "name": "$atlasfeatureid",
-  "type": "function",
-  "description": "Returns the feature id of the current row while using atlas. This enables you to use features of atlas in rules and for example show or hide features based on their id.",
-  "examples": [ { "expression":"$atlasfeatureid = $id", "returns":"true"}]
-}
-
diff --git a/resources/function_help/json/$atlasgeometry b/resources/function_help/json/$atlasgeometry
deleted file mode 100644
index 7aa1b488a1b..00000000000
--- a/resources/function_help/json/$atlasgeometry
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "name": "$atlasgeometry",
-  "type": "function",
-  "description": "Returns the geometry of the current feature iterated in atlas. Can be used for rule based display of geometry when using atlas. For example to only show geometries of other layers when their geometry intersects the iterated geometry of features using atlas.",
-  "examples": [ { "expression":"intersects( $atlasgeometry, $geometry )", "returns":"true"}]
-}
-
diff --git a/resources/function_help/json/$feature b/resources/function_help/json/$feature
deleted file mode 100644
index 459f1cce8aa..00000000000
--- a/resources/function_help/json/$feature
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "name": "$feature",
-  "type": "function",
-  "description": "In atlas generation, returns the current feature number that is iterated over on the coverage layer.",
-  "examples": [ { "expression":"$feature", "returns":"2"}
-  ]
-}
diff --git a/resources/function_help/json/$numfeatures b/resources/function_help/json/$numfeatures
deleted file mode 100644
index 5b14c571b5b..00000000000
--- a/resources/function_help/json/$numfeatures
+++ /dev/null
@@ -1,8 +0,0 @@
-{
-  "name": "$numfeatures",
-  "type": "function",
-  "description": "In atlas generation, returns the total number of features within the coverage layer.",
-  "examples": [
-	{ "expression":"$numfeatures", "returns":"42"}
-  ]
-}
diff --git a/resources/function_help/json/$numpages b/resources/function_help/json/$numpages
deleted file mode 100644
index 402b44f2ddd..00000000000
--- a/resources/function_help/json/$numpages
+++ /dev/null
@@ -1,7 +0,0 @@
-{
-  "name": "$numpages",
-  "type": "function",
-  "description": "Returns the total number of pages in the composition.",
-  "examples": [ { "expression":"$numpages", "returns":"42"}
-  ]
-}
diff --git a/resources/function_help/json/Form b/resources/function_help/json/Form
new file mode 100644
index 00000000000..e6b3d0950e1
--- /dev/null
+++ b/resources/function_help/json/Form
@@ -0,0 +1,5 @@
+{
+  "name": "Form",
+  "type": "group",
+  "description": "This group contains functions that operate exclusively under the attribute form context. For example, in field's widgets settings."
+}
diff --git a/resources/function_help/json/Layout b/resources/function_help/json/Layout
new file mode 100644
index 00000000000..b1221c88d1e
--- /dev/null
+++ b/resources/function_help/json/Layout
@@ -0,0 +1,5 @@
+{
+  "name": "Layout",
+  "type": "group",
+  "description": "This group contains functions to manipulate print layout items properties."
+}
diff --git a/resources/function_help/json/Processing b/resources/function_help/json/Processing
new file mode 100644
index 00000000000..94cff06c8c0
--- /dev/null
+++ b/resources/function_help/json/Processing
@@ -0,0 +1,5 @@
+{
+  "name": "Processing",
+  "type": "group",
+  "description": "This group contains functions that operate exclusively under the processing algorithms context."
+}