Thanks Judy!

This is a good idea, but it doesn't give me the answer I was hoping for.  
The request was for a form in outlook that would handle this task
automatically.  I don't see "event" as an option when designing a form.  I
thought of perhaps using a task request but I'm not seeing how it would work
either.  

Would there be any way to do this other than what you suggested where I
could have a generic public form to make the request then use it to update
the calendar?

Thanks again!