How do you open a Shared Mailbox through a web browser?

1. Log into Outlook Web App (OWA)
2. Click your Profile/Portrait in the top right corner
3. Click Open another mailbox...
   
4. Enter Shared Mailbox name or email address
   NOTE: The system will auto-populate options for you to choose from once you start typing. If nothing appears either you have the mailbox name wrong or you don't have access.
5. Click Open
   

Now you can use OWA to read/reply/send emails within the Shared Mailbox.