Countdown to close

I want the function that the Windows automatically closes after a set time.
This would be very convenient for the toilet or the bathroom after showering, amongst other things.

Hello Timo,
this function is actually present, but is not the most easy to use. You would have to "program" it using "Activities". You would probably want to create Activity which is "Always active" (see picture, alternatively you just add times to Schedule when you want this feature to be active). This Activity will then periodically check if the window was opened and how long and close if needed. Probably pictures will help. Please note the tab "Meantime". That is important as that is actually the only tab that is executed if activity is "Always active"

And setting "always active"