You can filter compartment items in Function Point diagrams to reduce the complexity or increase the level of abstraction in diagrams. By default, compartment items are listed in the same order as they are in the Properties view and the Project Explorer.
To filter compartment items by visibility style, selection, or by both visibility style and selection:

Showing and hiding compartments
Resizing compartments in data diagrams
Collapsing compartments
Sorting compartment items
Sorting attributes