Hi @muller
We're glad you're here. When you get a chance, please introduce yourself on this forum thread. I'd also encourage you to add a real picture as your avatar because it helps build community!
there is a quick
appearance that does that for you but it works only with select_one questions https://docs.getodk.org/form-question-types/#select-widget-with-autoadvance
What question types you would like to work in the same way?