In state radios (excludes City of Tulsa) zones 6&7 are the "home" zones, so what might be 7A (main TG) for one agency would be in the Area Law, Fire, or EMS zones for other users.
The generic programing for radios on the State system are:
Zone 1: SMAs
Zone 2: RMAs
Zone 3: Area Law M/A (*may not be accessible in non-LE agencies*)
Zone 4: Area Fire M/A
Zone5: Area EMS M/A
Zone6&7 will be the TGs normally operated on by the user.
I think zone 8 is conventional stuff like Itacs and Tulsa T/A.