1) Apple has general directions on how to add email accounts in Apple Mail here:
https://support.apple.com/guide/mail/add-email-accounts-mail35803/16.0/mac/14.0
2) You can select the Apple Mail instructions for your specific Mac OS version. Select your Mac OS version to make sure you have the correct directions.
What follows at this point are specific directions that work for Mac OS Monterey, Ventura, and Sonoma.
1) In Apple Mail, go to Mail→Accounts...
2) In the Internet Accounts window, click on the "Add Account" button:
5) Select on "Microsoft Exchange".
6) Type in your full name as it appears in the MIT Directory on the Name line. Type in your full MIT email address on the Email Address line.
7) You should be redirected to MIT Touchstone for kerberos and DUO authentication.
8) Once the authentication completes it should ask you for which services you want activated (Email, Calendaring, Notes, etc). Activate the toggles of those services you would like active. Click on the "Done" button to complete the setup.