In the "Statistics" tab, you can see activity data per unit/department.
Click on the "Statistics" tab and select the desired contact, in the top left corner. In the drop-down menu, named "Report type", in the top left corner, select "Activity per unit". You should now see different data related to your unit, including activity score, number of sessions, hours, days, calories burned, and the degree of satisfaction.
You can filter the results by time period using the drop-down menu called "Period".