A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hi Bob,
Can you let us know what OS are you using? For Office 365 on Windows, you should be able to right-click the cell and choose New Note.
Alternatively, you can press Shift + F2 to insert a comment. Please try one of the suggestions we provided and let us know if it works.
Regards,
Sheen