nuchuk motion

[SomethingsRom]

I would like to make it so that when I hold R1, my motion inputs from my dualshock4 controller would act for the nunchuk and not the wii mote, but only while I hold R1. I know how to make the motion activate on nunchuk, and I set it up so the input `R1`&`Accel Up` (or the proper accel for the motion in question) in the extension motion input, but how do I make the wii mote stop taking input while holding R1? I thought it would require something with an if statement but I'm hopeless with the syntax, so if you can help please let me know.