Reminder work off of your main mailbox. I would check out to see if there
are any add-in available to do this. A good place to start is the Slipstick
website.
http://www.slipstick.com/addins/calendar.htm
Regards

Signature
Francine Otterson
President, San Diego Outlook User Group
>I have added an additional calendar, but it will not allow me to set
> reminders for any appointments. Is this possible?