How to Set Authorship in Microsoft Software
In Microsoft Office software (Word, Powerpoint, Excel, and Access), Authorship is a property used to indicate who the author of the document was, and is used during optional use of tracked changes, comments, and file properties.
If you open a document from another user and change all of the content but do not change the Authorship setting, the document will still retain the other user's authorship information and any recipient may be confused as to who the true author of your document was.
The name of the author can be set to your name at any time during the editing of your document.
These two very short videos show you how to set authorship in Word 2003 & 2007:
Brief Written Instructions:
This pdf document gives written instructions for setting Authorship in three versions of Word: Word 2003, Word 2007, and Office 2008 for Mac. As this document shows, the instructions for Word 2007 and Mac 2008 are the same for all Office software (not just Word).