A site admin has keys to the castle. They have full access and permission to the Carousel software, including, but not limited to: user management, publishing content, registering players, etc.
Adding another site admin is simple!
Here's what to do:
Step 1
Login, click the gear icon in the top right corner and select configure.
Step 2
Click on the users section.
Step 3
Enter in the email address of your fellow site admins.
Step 4
Toggle the site admin setting from no to yes.
Step 5
Click invite users
(Once done, this invites them to set up their account and get to work!)
For information on user management and role based access click below: