It seems like that there is a heavy implication that age verification is only for instances only.
I would like to see the option for group owners to additionally enforce age verification to join / retain membership for their group.
Example scenario: I'm a group owner with five hundred members. At some point I would like to make my group require age verification in order for users to retain membership in the group.
When requiring age verification, any member who has not verified their age on their VRChat account via Persona gets a notification stating that they have 7 days to verify, or else they will be automatically removed from the group.