| Step 1. | On the EdgeBar tool, click the Assembly PathFinder tab. | 
| Step 2. | In the top pane of Assembly PathFinder, click the assembly you want to collapse. | 
| Step 3. | On the shortcut menu, click Collapse. | 
Tip:
You can also expand and collapse an assembly by clicking the plus and minus symbols adjacent to the assembly name in Assembly PathFinder.
When you in-place activate a part or subassembly, you cannot collapse the assembly structure for the assembly to which the in-place activated part or subassembly belongs.