Total of participants

Hello!

If you have access to run reports, I think there's a report that will give you what you want.
In the reports section, go to Active Hosts. 
Then go to By Users and find the host of the meeting.
Click on the user and then click on 'Generate details report'

This will output a CSV with each meeting and the attendees for that meeting.

Hope that helps and please make sure to mark the solution as accepted if this information is what you needed.

Thanks! Rick