Hey. My stock Fairphone OS had this smart option to set the phone to go to Do Not Disturb (or ‘night mode’ or whatever it was called) every night from x PM to y AM but only if the phone was plugged in. This was really handy since it avoided an issue I’ve had with other phones where I’m out on the town on a Friday night and all of a sudden my phone goes to DND.
However, I can’t figure out where to find that functionality in /e/