Settings now lists your members above the invites. You can change a member’s role or remove them, and the app only offers the roles you are allowed to give.
Removal and revocation take effect on the next request. A removed member is signed out of the organisation, and a revoked service account can no longer sign in.
Every organisation has at least one owner. An owner can make another member an owner, and can step down at the same time to hand over ownership. Nobody can remove an owner or change an owner’s role. An owner can give up their own ownership and stays an admin, as long as another owner remains.