Question: How To Covert A User Mailbox To A Shared Mailbox

This KB will show you how to convert an existing user mailbox to a Shared Mailbox.

In order to complete this we need to use the EMS.

Open the EMS and type the following cmdlet

Set-Mailbox Mailboxname -Type Shared

You can also use this cmdlet to convert user mailbox to Regular, Room, Equipment by changing the type.