Doc/maintainer subgroup subtleties
What does this MR do?
As per the discussion on !29718, better documentation is needed to make clear that:
- Maintainers in existing groups cannot create subgroups, but maintainers in new groups can create subgroups
- The setting can be changed for any group
- The setting can be changed by admins in the admin area
- The setting can be changed by owners in the group settings (this needs to be verified)
Does this MR meet the acceptance criteria?
Conformity
Edited by Evan Read