Once you have added a shared mailbox in your Outlook you can easily send and manage emails from that shared mailbox as well as from your own. 
To Send an Email From a Shared Mailbox
In the Outlook Desktop app:
	- Click From in your open email. 
- Select the shared mailbox.
- Click Send.
 
In the Outlook Web app:
	- From the open email, click Options on the menu and check Show From to display the From field.
- Click From in your open email. 
- Select the shared mailbox.
- Click Send.
 
Contact the IT Service Desk with additional questions!