right stick action with left stick button press

[sprocket]

Curious if this is possible. I'd like to initiate an alternate curve on my right stick with a button press from my left stick (both scg nxt evo's). I understand the process for setting the curve with a button press from the same stick but can't figure this one out or if its even possible. Thanks in advance.

The use case I'm after is for elite dangerous, toggling the right stick curve when I toggle flight assist.