Adjust existing permissions for your account administrators to assign a new Role in Settings.
1. Go to Settings
2. Click 'Account Administrators'
3. Click on the listed account administrator email address
4. Click the 'Permissions' tab
5. Click assigned roles on right and move them to available roles
6. Select new role on left and move to the right
7. Click 'Save'.
See this article on creating a brand new Role, if needed.