The JH Enterprise has provided instructions for this that include screen captures here https://johnshopkins.service-now.com/kb_view.do?sysparm_article=KB0012272
Adding via OWA(Web Version) on a Windows Device
This will allow a user to add the shared mailbox as a quick access point versus opening in a separate tab
Navigate to the Web Version of Outlook, either through http://Outlook.com or via the my.jh.edu portal
Once signed into Outlook, on the left hand panel you will see a drop down button that says "Folders"
Right click "Folders" and click add shared folder or mailbox
Type in the email X@JH/JHU.EDU
This will add the mailbox to the Web version of Outlook
Adding via OWA(Web Version) on MacOS
This will allow a user to add the shared mailbox as a quick access point versus opening in a separate tab
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