How do the Grouping and Sorting settings on the My Preferences page work?

The Grouping and Sorting settings on the My Preferences page allow you to set the default grouping and sorting of the parts on the results page of a catalog lookup. The Grouping setting will "cluster" or group the results based on the specified criteria, and the Sorting setting will sort the results within each group based on the selected criteria. These settings can always be changed manually each time upon arriving at the catalog results page. This can be found under the Search Details section at the top of the results page (look for View Search Details link if this section is not showing).