Tgood37 asked the Answer Line forum how to add checkboxes to Excel spreadsheets, and make sure that checking a box will have an effect.

You may already know you can add a watermark to a Word document, but you might not know that you can also add a watermark to an Excel sheet. Here's how.

Learn how to create, add or remove the digital signatures in the Microsoft Excel files. You will first need to have a signing certificate.