Plane 4.2 Full House Wing mixing

i am struggling with the adjustment of my 4 flap glider with v tail. The Differential Spoilers & Full House Wing guide left a few questions unanswered. I would like to use all flaps as arched flaps and also as crow brakes. Crow alone is no problem. arch flaps alone also work. But I can’t find a solution to enable both. I’m missing an input somehow. the crow switch does not fulfill this function either.
I am also looking for a solution to adjust the elevator to pitch ratio with snap flap. it’s only yes or no. Am I missing something, or is this really not possible?

I don’t mean for the automatic flight modes. I only use ardupilot in acro or manual mode.

thanks in advance.