I'm not sure what this feature might be called, so searching for pre-existing solutions has been tricky.
I'm looking for a way to allow a non-root but authenticated user to run simple tasks. For example, so a parent can log in and have simple enable/disable control over the LAN the kids use having access to the WAN or other simple tasks as an admin might pre-define for them.
I'm imagining they could sign in and have a button that runs a script that the admin has written for them. They would be unable to modify the scripts or do anything else.