Administrators can be added or removed on the Administrators page. To add an administrator, just enter their email address, and select the level of administrator they should be. To remove an administrator, find their address in the list of existing Administrators, and click "Member" to downgrade them to a normal list member. Their administrative rights will be removed, and their listing will be removed from the Administrators page.
You cannot change the settings of administrators who have more privileges than you. That is, only Account Administrators can add or remove Account Administrators. Listowners can add or remove Listowners or Moderators, but they cannot add Account Administrators.
Listbox © 1996—2017. The Listbox Name and Logo are registered trademarks of FastMail Pty Ltd