I have been flying 3D for years (some of you have seen some pics I have posted

) I have always done all of my 3D with no special mixing at all but I really want to try my hand at it now.
I was wondering how do I set up my radio (Eclipse 7) to have the Ailerons couple with the elevator. I.E. When I give the plane up BOTH ailerons move up. I am running 1 servo per side on a basic Y straight into channel 1 on my receiver. Do I need to run one of them into the flap channel on the receiver or is it all done via radio??? If done all by radio then walk me through it.