How to Save Sent Items From Shared Mailbox only in Shared Mailbox Sent Items folder

Hi All,

We want to save Sent Items from a Shared Mailbox only in Shared Mailbox Sent Items folder instead of in both sent items folder of the sender and the Shared Mailbox or only in the sender's sent items.

We use EXCH2013 CU10 and Oultook 2010 to 2016, we have set the settings via the following cmdlet in exchange.

set-mailbox <mailbox name> -MessageCopyForSentAsEnabled $True

When true, the sent item is stored in both mailboxes, when false it is stored in only the User's mailbox.

We want option 3: only in the sent items of the Shared Mailbox.

Can anyone assist us on this?

Thanks!