Click the PathFinder tab.
In the top pane of PathFinder, click the subassembly you want to hide.
On the shortcut menu, click Hide All.
Tip:
You can also use the Hide All command to hide a collection of reference planes, coordinate systems, or sketches.
You can also use the Show and Hide commands on the shortcut menu to show or hide an assembly component, such as a part, subassembly, or assembly reference plane.