Adjust existing permissions for your account administrators to assign a new Role in Settings.
1. Go to Settings
2. Click User Management then select 'Account Administrators'
3. Click on the listed account administrator email address
4. Click the 'Edit' button
5. Select Permissions from the left tab
6. Add or remove roles on left or right side and then select > or < to move to opposite side
7. Click 'Save'.
See this article on creating a brand new Role, if needed.