Take a moment to create a report that is a summary report with more than two additional columns of data. Add a "count" column. You will see the results will appear with an extra row below the grouping with the count. Summary reports have an extra row. If you don't want to see the summing row, but need to see the other data by line, you would need to use a subreport to present it all in one row.
This is a hard KC question. Now that you know it's not the type of data (operator information) being displayed that's important in the question, create a couple test reports so you can familiarize yourself with this feature. Familiarity with the OOTB presentation of different report types will come with practice.