If you are a manager of the account, you will be able to see membership by viewing the associated Google Group for the account - see this FAQ:
https://services.help.charlotte.edu/TDClient/33/Portal/KB/ArticleDet?ID=210
If you do not currently have access, contact the IT Service Desk - see this FAQ:
https://services.help.charlotte.edu/TDClient/33/Portal/KB/ArticleDet?ID=1335