Outlook for Windows currently displays 'Focused Inbox' hints for shared mailboxes.
However, this API isn't supported for the Microsoft 365 Shared mailbox. The Focused Inbox REST API provides Microsoft 365 mailbox message classification and training to help users sort their email efficiently. For more information, see Use Clutter to sort low-priority messages in Outlook. If you don't see Focused and Other in your mailbox, you might have a Clutter folder instead. In Outlook for Windows, Focused Inbox is available only for Microsoft 365, Exchange, and accounts.
