In the graphics window, select a part which you want to locate within PathFinder.
Right-click to display the shortcut menu, then click Scroll to Part. PathFinder scrolls to the part you selected. If the part is contained in a subassembly, the subassembly is expanded in PathFinder and the part is selected.
Tip:
In a complex assembly, the Scroll to Part command allows you to quickly determine which subassembly contains a selected part.