While Microsoft Excel's comments and notes tools both let you annotate a cell, they serve different purposes, work in diverse ways, and vary in how they look on a printed Excel worksheet.

Note: The setting will not replace the user name in the existing comments. You will see the change in the new comments you add in Excel. This is all about formatting a Comment Box in Microsoft Excel.

Open an Excel workbook and right-click on a cell where you want to add a comment. Select Add note. Write down your note, and you'll notice a small red arrow at the top of the cell.