ON my savex L39 i have as follows

wing type:flaperon.-uses ch3 and ch6 (aux1)

Channel 7 (aux 2) is connected to my flaps via a Y lead.

Ch7 (aux 2) is activated by my 3 posn flap switch, which also controls my flap system.

So the 3 posn flap is doing 2 jobs, dealing with the flap movement and also moving the flaperons (ch2 and ch6) up when i want crow.

If you wanted to seperate crow then you could use the 3 posn aux 3 switch to control eithe flaperons or the flaps or indeed both.