Deprecation notice - the set editor in a widget is removed from books as of Planning Analytics Workspace 2.0.81
You cannot add a set editor in a widget from the Data tree in books as of Planning Analytics Workspace 2.0.81.
Instead, when you edit a set from the Data tree, the new experience set editor opens. The new set editor opens as a dialog and is not inserted as a widget in the book.
Note: You can still add the set editor to a modeling workbench. When you open or create a set from the Databases tree in a workbench,
the set editor appears on a new tab on the active tabset.
The new experience set editor was introduced in Planning Analytics Workspace 2.0.71. For more information, see New experience view and set editor.