Cunning!....but how please?
Switch N is assigned to MIX3 in switch assignments.
Spoiler input to aileron and flaps is switched by switch N in the relevant mixers. The landing phase also has no camber or reflex and de-couples aileron to flap mixing when the throttle/brake stick applies more than 25% Crow.
In flight I only use the switch O on the left for flight phases. Then before landing I can just flick switch N to activate the Crow option. Nice and simple. Of course if I get bored I can tweak the camber in the cruise mode on slider F (in reflex and camber mode this is overridden to preset values) I can turn off and on snap flap with a centre dead zone (Switch I) turn on and off a tiny bit of aileron to rudder mix (Switch G) but mainly the only other controls I'd play with would be diifferential (left hand digiadjuster) and snapflap amount (right hand digi adjuster).
It is as simple or as complex as you like. Currently I mainly just switch the Flight phases and tweak diff with different amounts of rudder coupling.