Affinity has more granular permissions based on your user type on the Account and List level.
User Types: Account level
In Affinity, there are 4 different user types at the account level: Basic, Standard, and Account Admin (Basic and Professional tiers), and Enterprise Admin (Enterprise tier only). Only an Admin user will have access to updating the user type for their team members.
To check out what your user type is or to make updates to a team member's user type, click on 'Menu' on the top left and then Settings > Team Management.
User Types: List level
There are 4 different user types at the list level: Basic, Standard, List Admin, and List Owner (the user who created the list). You can share lists with specific team members without having to give admin privileges to each.
List Owner and List Admin will have access to sharing lists and defining user types. See Sharing lists