You can set up the display to allow Outlook-style grouping of rows.
For large amounts of data, grouping displays the data in the order the user needs.
The user selects columns by which to sort and the component then organizes and displays
the data in a hierarchy with rows organized accordingly. To select a column by which
to group and display data, either double-click on the header of that column or click
and drag that column into the grouping bar at the top of the page.
You can provide grouping to allow users to sort the data with multiple levels of
groups by dragging additional column headers into the grouping area.