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. Find the desired subgroup.
5. Double click the row or click the Edit icon.
6. Go to Description tab.
7. Enter information wanted.
8. Click OK to save changes.

NOTE: Subgroup description can be displayed on online booking if wanted. It is not displayed by default.