Create private events in Microsoft Entourage
Currently, there is no way to create private events in Microsoft Entourage. Microsoft Entourage, like the web-based Outlook Web Access (OWA, at http://mymail.rit.edu), does not allow events to be marked as "private" at this time.
The only clients that support the creation of private events are Messaging Application Programming Interface (MAPI) based clients (see Exchange MAPI and IMAP access from a Macintosh). These clients currently include Microsoft Outlook on Windows and Microsoft Outlook 2001 on "Mac OS classic".
See View private events in Microsoft Entourage for more information about viewing private events within Microsoft Entourage.