One Meeting w/ Multiple Presenters @ Different Times

I have a recurring weekly meeting scheduled with the same invitees. However,
each week we have different presenters join for only a portion of the call.
For example, it's a two hour meeting with 4 presentations of 1/2 hour each.
The presenters change each week.

I'd like to keep the 2 hour invite on the regular attendees calendar and
then the 1/2 hour sections for each presenter on their own calendars as I
schedule them.

Is there a way to do this? Any suggestions?

Thanks