You can limit the users who can join Circle through the following steps.
- Allow only users with age verification approval
- Allow only users who have been approved for phone number verification
- Only users of the same gender as the administrator are allowed
- Only allowed over 18 years old
■Steps (iOS/ Android)
- Tap [︙] at the top right of Circle screen
- Tap [Edit Circle Settings]
- Tap [Additional Settings]
- Optionally set in Restrictions section