Thanks for the clarification about Elements. In that case, there is a UI bug, the tool tip given when hovering over the Output routing is erroneous, and should be eliminated from the Elements version.
That said, Elements does allow rudimentary Output Routing. I created a Ear Monitor output bus (associated with UR44 Headphone 2), and can assign an Audio Track to be routed to either Stereo Out or Ear Monitor. If you want to have an Audio Track routed to BOTH busses, there is a workaround…you create a duplicate for each track to be sent to BOTH, and then assign each track its own Output Bus.