Toggle erg via wahoo Kickr bike

Hi, just wondering if it’s possible to set up one of the handlebar buttons to control the EGR toggle switch instead of having to use the companion app or computer mouse?

What some people do is use a Garmin GPS to control the power on the kickr bike, then the bike is paired with Zwift.

It’s a trick used by some people in group rides, even some leaders.

Otherwise so far as I know you have to use companion app to adjust the workouts.