You can add or delete admins in the Manage Team section.
Click your store name in the bottom left and then the Manage Team button. You'll be able to add admins by clicking on Invite team members and delete admins by clicking on the three dot menu.
NOTE: Owner and Admin roles have the same access as administrators with the exception that only Owners are able to create Admins.
Viewing an Admin's Profile
If you click Show in the three dot menu or click the admins name, you will be directed to their profile page, it's very similar to viewing a customer's profile page.