Unregistered Co-presenter for My Session

I'm doing the CiviCRM session on Friday morning. The plan is for me to provide an overview and then for Jacob Singh from CivicActions to present a live CiviCRM implementation - with examples of integration and API usage. However, Jacob is not registered for the conference.

I'm hoping that I can get him in with me to do the presentation on Friday. What do I need to do to make this happen?

Thx,
Dave Greenberg