The Boss does this by bringing up the Properties dialog for the Calendar folder and setting permissions there.

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Sue Mosher, Outlook MVP
Author of
Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx
>I need to be the only person with the ability to write/change the Boss's
> calendar (other than him and his personal assistant). the other two
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>
> Thank you!