How to filter and sort the data in your report

1. While you are in the report, click the Filter/Group/Sort button
2. Make your selections to narrow your results and control formatting of the report
3. View. 

Grouping on a field will collate all of the records with a like value together. It is like sorting by a field when you have more than one record with the same value. Instead of repeating the value once per record, it only displays once creating a "group" of records. This improves readability of the report.