Hi @gemdemhen,
Apologize for the late response.
For the Attendees information, we could add an apply to each before we add the Inset Row Action. See my screenshots:
Here we use the Outlook->When a new event is created as the trigger, the first Insert Row is used to update the table for Events, and Insert Row 2 is used to update the Attendees Email address.
Steps should be as below:
1. Add the When a new Event is created trigger, choose the right claendar,
2. Add the Insert Row Action, specify the file, table and the Event related information with the corresponding column,
3, Add another Insert Row Action, Under the dynamic content, you should be able to find two Address content listed, choose the one which would add an apply to each.

See the results:


Hope this information is helpful.
And if you have any further questions, please feel free to post back.
Regards