Microsoft Word (Mac) - Add Password Protection in a Word Document
To add password protection on your Word document, follow the steps below:
In Microsoft Office, you can use passwords to help prevent other people from opening or modifying your documents, workbooks, and presentations. Also, you can use document protection to restrict the types of changes that reviewers can make.
Open your Microsoft Word. Navigate to the top right of the menu bar and click on Review.
Clicking on Review will provide you with more review options. Under more Review options select Protect Document.
After clicking on Protect Document, you will be redirected to the "Password Protect" pane.
Under the password protect pane, navigate to "Security" and set your preferred password.
After setting "preferred password" click on Ok located on the button right corner of your display screen.