Additional docs

docs/docs/extend/plugins/ui.md

@@ -80,6 +80,8 @@ The InvenTree dashboard is a collection of "items" which are displayed on the ma
       summary: False
       members: []
 
+#### Dashboard Item Options
+
 The *options* field in the returned `UIFeature` object can contain the following properties:
 
 ::: plugin.base.ui.mixins.CustomDashboardItemOptions
@@ -91,6 +93,12 @@ The *options* field in the returned `UIFeature` object can contain the following
       summary: False
       members: []
 
+#### Source Function
+
+The frontend code expects a path to a javascript file containing a function named `renderDashboardItem` which will be called to render the custom dashboard item. Note that this function name can be overridden by appending the function name in the `source` field of the `UIFeature` object.
+
+#### Example
+
 Refer to the [sample plugin](#sample-plugin) for an example of how to implement server side rendering for custom panels.
 
 ### Panels
@@ -106,6 +114,8 @@ Many of the pages in the InvenTree web interface are built using a series of "pa
       summary: False
       members: []
 
+#### Panel Options
+
 The *options* field in the returned `UIFeature` object can contain the following properties:
 
 ::: plugin.base.ui.mixins.CustomPanelOptions
@@ -117,6 +127,12 @@ The *options* field in the returned `UIFeature` object can contain the following
       summary: False
       members: []
 
+#### Source Function
+
+The frontend code expects a path to a javascript file containing a function named `renderPanel` which will be called to render the custom panel. Note that this function name can be overridden by appending the function name in the `source` field of the `UIFeature` object.
+
+#### Example
+
 Refer to the [sample plugin](#sample-plugin) for an example of how to implement server side rendering for custom panels.
 
 ### Template Editors