When someone creates a team they are designated as that team’s “Super Admin”. As soon as they invite new people to the team they can change the roles of those new users to administrators! (Note: Super Admins can change any user to any of the 4 tiers of user. Super Admin, Admin, Team Member, and Guest). 

We recommend having multiple administrators to ensure that if an admin loses access to their account, your team does not become locked out.