O365 with Hybrid Exchange Setup.  We are successfully creating user mailboxes now with ADManager as Remote Mailboxes, works perfectly.

We want to move our process of creating Shared Mailboxes to ADManager as well, but we don't see any way to create them as a Remote mailbox.  Is this possible?  When I go to AD Mgmt -> Mailbox Management -> Create Single Shared Mailbox, it's insisting on on-prem Exchange information being entered, even if I complete the O365 fields.

If I go to O365 Management, there is nothing about Shared Mailboxes under Mailbox Management