League admin rights come from four places:
- the league owner
- league admins the owner has appointed
- the owner of the league's broadcasting channel, automatically
- the GridCast team
To add a co-admin, open the league's Settings → Admins → Add Administrator. Enter their email or iRacing ID, then tick what they can manage: roster, schedule, news, settings, and other admins. Permissions on each admin changes their rights later, and Remove takes them off.
Organization staff can do the same for every series from the organization's settings → Staff → Series Staff.