This adjustment will need to be made on the registration information for the participation type. You can do so with the following steps:
  1. Edit the TeamRaiser.
  2. Select Step 7. Manage Participation Types.
  3. Select edit next to the participation type in question.
  4. Select Step C. Select Registration Info.
  5. Under #1 Mail Preferences, unmark the box labeled "Requested". In doing so, it takes away the ability for a constituent to decide whether or not they want to receive postal mail.
  6. Save your changes.