The simplest method is as follows:

1. Basic Menu - Aux Channel change to SW C. This provides 3 position +100% /0%/ -100%

2. Basic Menu – End Point With SW C in Up position adjust desired (say 75%), with SW C in Down position adjust as desired (Say 90%). This provides Flap Up with SW C Up, Takeoff Flap with SW C Centered and Landing Flap with SW C Down.

Play with the end points until you achieve the values you need. No P-Mixes required. (You can use the Basic Menu - Servo to immediately see the effects of your adjustments with the module removed during programming).

Dennis

Edit: If needed, you can also activate AIRBRAKE to provide delayed elevator trim at full flap.