Continuing with the example report:
Where you are requiring information on the group header use the same techniques used in the header. From the [Group header options] tab select the header item required. Using a similar technique as that used in the details line, move in the items to the "fields included".
In this example we do not require any items in the group header. The titles selected in the detail line will be shown on the group header for each new group. If we did not choose the group header option in the sort items tab we would not get the detail titles repeated on the change of group.