Sorry to be so dumb. Need help with plane config

First thank you to have done all that work with deviantiontx. I just changed to deviantion today, I am not really a beginner as I could program the walkera tx. But now I am stuck I have setup a 4 channels plane (only 1 servo for ailerons) And I have no idea on how to setup my bixlers with 2 servos for ailerons. Can someone help me I think i did'd understand how to config the mix. Or if you have a model or a template I'll be so happy.
Thank you

Okay I found. No mixing but just asign channel 6 to ailerons.
Youpy