The Report Groups window displays the report groups that you have created. It allows you to group reports, financial statements, and views together so that you can print them in a batch. Report groups are helpful when you need to print several reports; you can just select the report group to print overnight or while you're at lunch.
To actually create a group, you need to use the Group button at the top of the Select a Report or Form window.
If you select the Group button in the Select a Report or Form window when report groups are displayed in the report list, the corresponding report group will open so that you can add or delete reports.