Adding a Shared Mailbox on Outlook on the Web
NOTE: This article assumes you have already been granted delegate access to the shared mailbox. Additionally, shared mailboxes do NOT have credentials associated with them, so you should NOT be attempting to reset the email's credentials since access to shared mailboxes is NOT granted via credentials.
The following instructions detail how to add a shared mailbox as a folder on the left-hand side of Outlook when you access Outlook via the web browser (Outlook).
1. Login to your work email account (NOT the shared mailbox email address).
2. Right-click where it says "Folders" on the left, choose "Add shared folder" and then type in the shared mailbox's email address into the box.
