I've used Debian for years on my personal machines and have never had this problem. According to Debian's documentation for NetworkManager, a user account must be in the netdev group in order to manage system-wide network connections. The initial user account that the Debian installer creates for you is in this group by default, but maybe the accounts you created for your family members aren't?
Snarwin
joined 1 month ago
Just started Summon Night: Swordcraft Story. So far I'm enjoying trying out all the different kinds of weapons and picking up hints about the game's unique worldbuilding. Now that I'm out of the tutorial section, I'm looking forward to seeing the story pick up and hoping to find a little more variety in the design of the upcoming dungeon levels.