How to Lock a Word 2007 Document

1. Open the Word 2007 document that you wish to lock. Click 'Review' on the Office ribbon located on the top menu bar.
2. Click on 'Protect Document' on the far right side of the 'Review' tab.
3. Click on 'Restrict Formatting and Editing.' Check the box next to 'Allow Only This Type of Editing.' Beneath it, make your restriction selection.
4. Select 'No Changes' to make your document 'Read-Only.' Others will be unable to modify any portion of the document. Select 'Comments' to allow only comments on the document. Select 'Filling In Forms' to allow others to fill in sections of the document. Select 'Track Changes' if you want others to be able to edit the document and the document to display the changes they've made.
5. Click on 'Yes, Start Enforcing Protection.' Your Word document is now protected and locked with the criteria that you set.