When one person has signed the file, the file becomes read only.
Here’s something else that’s important to know about digital signatures and files. After the first person signs, the file will become read only. Later, other signatures can be filled out, but no changes to the file can be made. This ensures that the first person doesn’t sign something different than the rest of the signers.
Important Microsoft Office digital signatures combine the familiarity of a paper signing experience with the convenience of a digital format. While this feature provides users with the ability to verify a document’s integrity, evidentiary laws may vary by jurisdiction. Microsoft thus cannot warrant a digital signature’s legal enforceability.
