1. Use the Tours → Groups item from the main menu.
  2. Find the desired group.
  3. Double click the row or click the Edit icon.
  4. Go to Services usage tab.
  5. Choose your filter options.
  6. Click Filter button.

NOTE: This is a list of service usage of the whole group. If you want to see services usage list for a specific subgroup: enter a subgroup, go to Services usage tab, choose filter options and click Filter button.