Nav Waypoints - question

[Zero Niner]

How do you insert a new waypoint in the middle of whatever course you've plotted? I've always had to delete & start over from where I wanted the new waypoint to be.

[Gizzmoe]

Select the plotting tool, move the pointer over a waypoint, then use Ctrl-Leftclick.

[Zero Niner]

Hmmm, I must be missing something. I can get it to work sometimes. But most of the time, it doesn't.
Help?? :damn: