How to Put a Signature on Microsoft Excel. Microsoft's Office programs have powerful options for creating and editing documents as well as protecting those documents.

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

You can add a signature to an Excel spreadsheet using electronic signature software or using the Insert feature in Excel. Open an Excel spreadsheet and select Insert > Add a Signature Line.

How to Add a Signature Line in Microsoft Office. Asking people who read your Microsoft Office Word documents to sign on the bottom line is never a problem when the page is printed out.