Flight Planner - Add Waypoint Sequencing Issue

[gallen144 12]

I'm having a problem with adding waypoints to a flight plan in the planner. I'm doing a round robin circuit from departure with arrival back to the same airport. When I add a waypoint that gets closer to the departure, it is added in the wrong sequence (as the first waypoint instead of the last). There is no way I see to adjust the sequencing manually.

Am I missing something here?