ORIGINAL: DP01
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.
While the above works, I did not like using my flap switch this way. I try to make things very simple on my radio setups... First preference is to have all switches up (away from me) for "Off", just makes it simple to know the state of everything before I power up. Second preference is to pass through takeoff flap position as I transition to landing position. Allows me to drop flap, slow down, drop gear, drop flap to landing position..... Gregs way was how I originally did my flap setup on the 9C but when I needed more mixes I had to find a better solution.... Method posted does the trick with one mix

Todd