Display the PathFinder tab.
On the PathFinder tab, select the part you want to reorder.
When the selected part is highlighted, click and hold the left mouse button to drag the selected part to its new position.
Tip:
As you drag the part, PathFinder displays a symbol to show where you can reposition the part in the assembly structure. The part will be positioned below the highlighted part occurrence in PathFinder.
The symbol changes if you drag the part to an invalid location in the assembly structure or outside PathFinder.