Adding Salesperson to Sales by Item Detail Report

Can I add Salesperson on my Sales by Item Report?

Yes. You can add Salesperson as a grouping field at the top level.
  1. Click More Actions → Advanced Settings.
  2. Click the grouping tab.
  3. Click Add.
  4. Choose the + sign next to Document.
  5. Highlight Salesperson.
  6. Click Add.
  7. Highlight the new field and click the blue up arrow until it is first in the list.
  8. Click Finish Editing.
  9. Run the Report.