Hello, I have some questions/requests.
What plugin, or setting, would I find for auto-assign groups. Example: when a user gets banned, they will be automatically moved to a group named "Banned".
You would have to create a plugin to add users to "Banned" group when they get banned.
How would one change the Group Name of the two system names?
You wouldn't want to do that. Lot of code is based on those names. Changing them will break things.