Hello Colleen,
At this time, a work around is to use the "print page" option in your browser where you are viewing the proposal, then save the page as a PDF. Later this year, we will be releasing an easy way to share proposals with a secure URL, which will allow the recipient the ability to view the proposal with the same rich content in the proposal, like videos, that don't translate well to a static format like PDF.
Regards,
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Alaina Del Real
Lead Client Success Advisor
Cvent
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