Super small feature request: ability to click "FTM push" using keyboard

Hi,

Logging into VPN with 2FA is safe but there's many steps. 

I always click "FTM push" rather than copying a number from the app, it's faster.

After typing username/password, I always need to reach for my mouse/trackpad to click the FTM push button.

This would not be needed if I could use the tab key to give focus to the FTM push button. Then I can leave the mouse alone and reach for my phone when I'm done typing. If I can configure it to always use FTM push that would also be OK of course.