Require a password to modify a document - Microsoft Office 2007
In addition to setting a password to open a Word document, you can set a password to allow others to modify the document.
2. On the Tools menu, click General Options. The General Options dialog opens.
3. Under File sharing options for this document, in the Password to modify box, type a password.
4. In the Confirm Password dialog, re-type the password. Click OK.
5. Click Save.
To remove the password, repeat these instructions and then delete the password from the Password to modify box. Click Save.
*Please note: If you lose your password, IT Services cannot recover your document.