Reconsider whether you are a closed group
You have chosen to be an open organisation (which people can join as members), and chosen to have an unelected committee. These answers are contradictory, because having an unelected committee means that you are not an open organisation run by its members, but a closed organisation run by a specific group of people.
You need to change your plans a bit.
Go back and choose to be a closed group
Go back and choose to have an elected committee or no committee
Your route so far:
Open group? Yes Unelected committee? Yes