This dialog displays two panes. The left pane will list all defined Entities, Resources, Processes or Activities (depending on the tab in the Global Attribute Definitions dialog from which it was invoked) that have locally defined attributes. If there are no local attributes, this pane will be empty.
Selecting any item in the left pane will display a list of the item's local attributes in the right pane. No items in the right pane can be selected.
The Edit button will become enabled when an item at left is selected. Clicking this button (or double-clicking any item in the left pane) will allow you to edit that item's properties, where it is also possible to add, modify or delete local attribute definitions. Any changes will be reflected in the right pane when you return to this dialog.