1. Navigate to Control > Administration > Organization Setup > Manage Event Groups.
  2. Expand Event Groups. 
  3. Click the Name of the group that has the Team Group you wish to delete. 
  4. Click Action. 
  5. Click Add/Edit Team Groups. 
  6. Click the group number of the team that you wish to delete. 
  7. Click Delete in the bottom right corner. 
  8. Click Submit.