1. Navigate to Communities > Special Events > Friends Asking Friends > Kintera Thon 
  2. Hover over the name of your event and select Website Info
  3. Under Event Customization, select Website Features
  4. Under Allow Multiple Registrations per Transaction, click on the radio button for Register a Family
  5. Scroll to the bottom of the page and click Save
  6. Navigate back to Webinfo Checklist and click Publish