Any admin can manage the users on the team (Add / remove / grant admin rights) via the Manage Team page at https://feedly.com/i/team/users
To add a user to a team:
1. Visit the Users page of your Feedly Teams account
2. Choose Invite Users
3. Type in the email address of the user you would like to add and choose whether or not you'd like to give them admin access
4. Press Invite and this will send the user an email. From there, they can set up their account!