Controller JSON - How to assign multiple buttons to shift up/down

I've looked everywhere to try to understand how to assign two buttons to one command, but have come up empty. I've tried adding commas, whitespace, and separate lines... nothing works. Here is the existing line for upshifts:

"Control - Shift Up":[
3,
36
],

I'd like to add "45" (same controller, ie. number 3) to the upshift.

Can someone please help? Many thanks.

 

View attachment 20950

 

You're kidding me! It's in the menus! I can't believe I never saw that.

Thank you.

 

Don't feel bad. I've been playing this for over three years and I didn't know it was in the menu either.

 

In fact it was added in the last build or two. [emoji3]

 

Update 37 (Build 1052) Changelog:
FEATURES:

Added the ability to use alternate controls for throttle, brake, and steering (they are at the bottom of the list of driving controls in the UI). Note that the alternate controls do NOT support ramping which is normally useful for driving with keyboards or buttons, so it preferable to select only analog devices for the alternate controls.