Use the details group to group data within a list. You can place lists within lists to create nested grouping.
To group a list
- In the Layout view of the report, right-click the List report item and choose Properties.
- On the Detail Grouping page, enter a Name for the group.
- Under Group on, enter an expression by which to group the data.
- Under Document map label, you can optionally set a label to add the item to the document map (table of contents).
- Under Parent group, you can optionally set the parent group for a recursive hierarchy. See Grouping and Sorting Data for more information.