How to Password Protect a Document on a Mac Using Microsoft Word
1. In Word, open the document you wish to encrypt, then click Tools. From the Tools dropdown menu, select Protect Document.
2. From the Password Protect box, select from the options given to set various protections for the document. When you're finished making your selections, click OK.
IMPORTANT: When setting a password for a document, remember to save the password in a secure location, such as a password vault (TCIT recommends using LastPass for securely storing passwords. Contact the Service Desk to get LastPass)