To add a comment to a cell that doesn't already have one, right-click the relevant cell, and select "New Comment." Alternatively, select the cell, and click "New Comment" in the Review tab on the ...

How to add helpful prompts to Microsoft Excel cells. Enhance your spreadsheets by providing on-the-spot instructions. By Roland Freist. Contributor, PCWorld Jun 16, 2025 8:00 am PDT.