Instead of using the Group presentation style to create a grouped report from scratch, you can take an existing tabular report and define groups in it.
To add grouping to an existing report:
Start with a tabular report that retrieves all the columns you need.
Specify the grouping columns.
Sort the rows.
(Optional) Rearrange the report.
(Optional) Add summary statistics.
(Optional) Sort the groups.
Steps 2 through 6 are described next.
