TimeSprite uses 2 types of groups for summarizing data.
Automatically generated groups
These are generated automatically as part of the classification process, and are used to group similar window titles. The group name is taken from the common parts of the window titles. These groups are not saved - they are created as needed as TimeSprite groups windows.
User Defined Groups
These are defined by you to help you organize your time. They are created automatically when you use a new group name. You can assign automatically generated groups, individual window titles or specific times to these groups. This lets you combine several groups of titles into one entry, or move particular window titles or times into a different group. These groups are used to create the weekly and monthly timesheets.
TimeSprite uses the following process to assign times to groups:
When you assign groups, you should normally work in the opposite order. Assign automatically created groups to your own groups first, and group by time last. This minimizes the work you need to do to make sure groups are assigned correctly.
You assign a group by selecting one or more entries to assign and right clicking in the main window. You can assign items from the Group list, the Window list, or entries in the Journal view.

Enter a group for the selected entry, or pick a previously used group from the list. Only groups you have assigned appear in the list. The automatically generated groups do not appear.

Using groups you can assign more meaningful names to your activities.

Select the times you want to group and right click to assign a group.