I would like to add buttons into a calendar user interface.  I don't have appointments that i need to bind.  I'm trying to allow scheduling to time slots and would like to show a button to allow adding appointments to a time slot if time slots are available.  Originially, I was expecting that I would see some kind of day rendered event on the calendar and that i would be able to just add a button control to the day.  I don't see anything like this.  I have found recommendations to use a IUIElementCreationFilter but it seems like i have to have appointments bound to the calendar for this to work.  Please point me in a direction.

Thanks!