Hi Kim,
We found the same issues and, as far as I'm aware, there is not a solution with the current agenda widget to show all speakers. The only solution we have found is to create our own agenda by piecing together data tags and experimenting with formatting, which makes things a lot more complicated. I submitted feedback to Cvent about this and would suggest you do the same as well.
Thanks,
Kirsten
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Kirsten Derrickson-Boice
Business Analyst/IT Project Manager
MIT Office of Resource Development
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