When your macOS computer is turned on or rebooted, you'll be prompted to login like below.
Enter your "My Maritime" password to unlock your hard drive's encryption.
Enter your username "jdoe" and hit enter or "Sign in with Microsoft".
If your computer is hard lined into the network or at home, sign in with your "My Maritime" credentials to login.
If your computer is on WiFi on campus, please select the "Local User" icon on the top right and sign in with your username / password.