On my MPX transmitter I have 4 flight phases
1 - no flap/aileron mixing, no aileron/rudder mixing,
2 - flaps coupled with ailerons for enhanced roll rate (Acro mode)
3 - ailerons mixed with flap for full span camber, aileron/rudder mixing (also vario enabled)
4 - crow (or butterfly in Futaba) enabled, aileron/rudder mixing