I don´t understand what you are trying to do.
If the servos are matched in the Champion - there is nothing to do here. You have in the radio only one channel for the left, and one for the right side.
You must make one function for each of this two channels
Richard, I do have a few more questions now. So if I assign both the left and right ailerons as seperate functions, how do you go about mixes? Like the Rudder/Aileron mix for Knife Edge coupling. I noticed that I can only assign one aileron function to the rudder and not both at the same time. I was also wondering about Dual Rates/Expo setup. Is there any way to adjust both aileron functions at the same time just like when they were together under the same function? It looks like they have to be adjusted seperately when they are seperate functions.
I think that the Aileron Differential Menu in the next update will be the best option as it will keep things simple. Especially because of mixings and dual rates/expo. I'm excited for that new feature!