Thank you for reaching out in the Community! It sounds like you've already done a lot of research on the options in the event product. I know that it is important for you to be able to limit the registration options based on which break out sessions your customers attend.
In order to achieve what you are looking to do, you would need to create separate events for each break out section. The other option would be that you could sign up with Eventbrite and use our integration with them. There may be some more flexible options within that integration.
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