Hi,
If you have relevant permission in control hub, there is a troubleshooting session available to check the issues and status of a meeting. also, with the advance troubleshooting access you can view all the live meeting in your site. Recommended to use the help.webex.com where lot of useful information available. I found the search function is very effective.
For reference: Advance Diagnostic and Troubleshooting in CH
Please feel free to ask, incase you have queries related to any specific problem, the community will definitely help.
Regards