Up to 100 individuals may attend your event. Only individuals who have attended an official TED conference in person may organize an event with more than 100 attendees. I.e., the primary license holder -- the individual whose name is on the application form -- must have attended a TED conference. Having attended a TEDx event does not qualify you to host an event for more than 100 guests.
In order to truly understand the TED conference structure and its nuances, it is important that the primary licensee has attended a TED conference. We are giving a part of the TED brand away for free. This is an inflexible rule because it is the only way TED can manage compliance and quality on a global scale.