| Step 1. | 
                  
                   In the Assembly PathFinder tab or the Assembly window, select the parts you want to activate.  | 
            
| Step 2. | 
                  
                   Right click, and on the shortcut menu, choose Activate. 
  | 
            
Tip:
You can set the color for the display of active and inactive parts using the Options command on the Tools menu.
When you activate a hidden part, it is also automatically displayed.