Sue wrote:

My boss often adds items to his calendar to which I have access on my
machine. I would like it to automatically (or manually) sync with my
primary calendar.

Manually syncing is easy. Just right-click the new items on the one and
copy them to the other. There are third-party tools that can sync calendars
automatically. See if this helps:
http://www.slipstick.com/addins/calendar.htm#tools
--
Brian Tillman