After a certain time of being idle: when coming back to Plex automatically switch to and log in to a specific user account

The problem: On the Apple TV I have Plex set to auto log in – this is for my kid’s convenience. Sometimes (make that most of the time) after using my own ”grown up” user I forget to switch user to the kid’s account, this makes the kids get logged in to the ”grown up” account the next day when they start up Plex.

I’d like to avoid that.