-Open a scene consisting of several parts. (Or create a new one.)
-In the top of the scene browser, klick on the red IronCAD ikon.
-On the keybord numerical keypad hit the key *
This will make all parts and assy's expand.
-Hit + to collapse it back.

If you first select a part and then hit * IronCAD will expand only that part.
Robert Andersson