If you know the contact information for the individuals you are purchasing tickets on behalf of, you can add the email address, phone number, first and last name, and company/organization for each ticket you purchase (reminder to include any dietary restrictions). Each individual will receive their own e-ticket. If you don't yet know the contact information for your other attendees, simply enter your information for now, and then edit the ticket(s) later once you know who will be attending (see below info re: how to do this).