When you open up a Microsoft app like Word, you should be getting a window pop-up like this.

You will NOT have to enter a product key, you will use your CMN.edu login to activate.

Hit the link at the bottom that says Back, and a new window will open like this one.

Click the Sign In and log in using your CMN email account and password. Be sure to include @cmn.edu

This should log you into the Office applications and activate all of the features.

To check, click on File in the top left of the page and then Account.

See if your email address is underneath the User Information. If it is, you are activated and ready to go! The picture below is just an example of what it would look like.