Mission Editor Tip of the day #2: Inserting a new waypoint.
Inserting new waypoints using the mission editor can be confusing (for me anyway)! Here is a step-by-step procedure:
Within the Edit Formation box, click on the Edit Waypoints button. After the Waypoints box opens, click the “NEXT WPT >>” button and navigate to the first waypoint after the spot on the map where you want to insert your new waypoint. Next, select the type of waypoint you want to add by clicking the blue rectangle next to Wpt Type. Now, click the yellow "Insert Wpt“ button and place your new waypoint. After you have finished, click SAVE and your new waypoint should appear on the map.
The most important part of this to remember is to navigate to the first waypoint on the map AFTER the point on the map where you want to place your new waypoint. After the new waypoint appears on the map, you can edit it just like any other existing waypoint, changing waypoint type, planned altitude, cruising speed, etc.