I have asked this question in other threads but never got an answer from IPACS. That's why I open now a own thread.
I cannot assign a keystroke to the course 1 and 2 in the navigation settings page (e.g. F11 for counter clockwise and F12 for clockwise turning). I mean I can assign a key but it does not work in the airplanes. For all the other (autopilot) functions (speed, heading, VS, alt) it works.