Sometimes users change their mind and an office 365 group now needs to be a shared mailbox or they didn't like the email address they created in the first place. This post explains how to achieve this via Powershell.
How to update a PowerShell Window title and automate this with a PS profile
A modular script for connecting to Microsoft Online Services and on Premise infrastructure with MFA support.
Using PowerShell to filter events on the domain controller to find the admin account used to disable the user.
With Outlook 2016 most shared mailboxes will automatically be added to your outlook client. If the mailbox has been around for awhile it needs a little bit of help. This is the guide I send to users to add or remove a shared mailbox.