One of the unfortunate things about a piece of software as complicated as Word 2007 is that privacy settings aren’t centrally located. This makes discovering the full range of what’s available a bit difficult. To save you the trouble of searching all over to find what you can control, here’s the definitive list of the different types of protection (and pseudo-protection) Word 2007 offers and where to find them (more details about the settings will follow later in the chapter):
Permission— Restrict a document so it can be opened and/or changed only by specific individuals. Select Review tab Protect Protect Document Restricted Access. You then need to specify whether to restrict formatting or editing (or both), click Yes, Start Enforcing Protection, and then create a password when prompted.
Digital signature— Sign a document with a digital signature to provide assurance that you are the source of the document. Select Office Button Prepare Add a Digital Signature.