1. Go to Communities > Special Events > Friends Asking Friends > Kintera Thon 
  2. Hover over the Thon name and click Bookkeeping
  3. Click Manage Initiative Records
  4. Search for your Participant
  5. Click Edit next to their name
  6. Select the Edit Event Information tab
  7. Edit fields accordingly
Please note:
If the supporter registered prior to the event fields being made active on the form, then they will not be available to edit. You will need to reverse the registration and have it re-entered.