Rotate Around Functionality
In motionbuilder, you have the ability to select multiple objects, then hit Shift+e to activate the ‘Rotate Around’ tool. This allows you to rotate all selected items around the pivot point of the last selected item. It’s great for rotating a foot/ankle control around a toe, or a pelvis around a foot, etc.
So specifically, this request would be for a tool or some functionality that would allow you to rotate a items around the pivot of the last item in the list.