Before you distribute a form that users will view and complete in Microsoft Word, you must protect it so that users can enter information only in the designated areas.
Note When you protect a document by using the following method, any information in form fields will be reset.
On the Tools menu, click Protect Document.
Click Forms.
To assign a password to the form so that users who know the password can remove the protection and change the form, type a password in the Password (optional) box. Users who don't know the password can still enter information in the form fields.
To protect the entire form, click OK.
To protect only parts of a form, those parts must be in separate sections. Click Sections, and then clear the check boxes of the sections you don't want to protect.