In the classic Outlook I can add Inbox folders of shared mailboxes to Favorites, easily detecting and accessing new emails sent to any of mailboxes I manage. In the new Monarch Outlook, this is no l...
It looks like there is light in the tunnel:
https://www.microsoft.com/en-us/microsoft-365/roadmap?featureid=388913
They've been pushing that go live date back for the last year... at this point I won't believe until AFTER its been rolled out.