You will need to create a child event from the TeamRaiser blueprint.
  1. Navigate to: Fundraising, TeamRaiser, Blueprints
  2. Find the Blueprint in question
  3. Click Copy
  4. Choose "Create Child Event"
  5. Insert Administrative Name
  6. Click Finish
For more information on Blueprint TeamRaisers: https://www.blackbaud.com/files/support/guides/luminateonline/Admin_TeamRaiser_Understanding.html#top