If you want spoilerons, you need to set the switch at "mid", and set up your servos for neutral.
For flaperons, change the settings to your prefered settings, before you put your servos at neutral, with the switch at 'Norm".

I prefer to use flaperons, but it never fails, I forget to change the settings. And, then I wonder why I can't get my ailerons to perform properly.

Good luck,
EJ