The PAC ControlPRO (SWI-CP5) lets you put two functions on one button. I was paralyzed in a car accident which means I now drive with handcontrols so my hands are occupied. My right hand stays on the wheel while my left hand works the gas/brake. My 2011 Toyota Sienna has the radio functions on the left side of the steering wheel and the phone funtions on the right. With the ControlPRO can I move the phone buttons to the radio buttons on my wheel or is the dual function only for radio use? I'm looking to upgrade my HU to the Pioneer AVH-X5700BHS.