Watch it done here:
Talk Now allows you to connect with exhibitor staff members on a 1:1 video call. The event host defines one or more slots where attendees can make direct calls with exhibitors of their choice. If available at the event you will see the Talk Now widget on the organization page with a list of sessions.
Important Note: Talk Now only works on laptops and computers. It does not work on mobile devices including cellphones, or tablets (Android or iPads).