...
Navigate to the exhibitor's booth page
Scroll down to the representatives at the bottom of the page
Click Talk Now under an available representative
The representative will click the Green Phone icon to answer the call
The exhibitor representative will see a prompt to answer the call.
...
If they answer it, the exhibitor representative and attendee will both be brought into a live breakout session.
...
Both people can turn on their camera, microphone, and share their screen.