[Webcalendar] How to overlay calendars

[Joe Smith]

The WebCalendar web site says:

> Overlaid Calendars -- Combine and view serval calendars
> simultaneously, making schedule conflict resolution a total ease.

but I can't seem to figure out how to do this.

I found the 'merge calendars' function, but that's static copying of 
events from another calendar.  I need to define a view that combines all 
the events of several calendars, but any updates to the calendars in the 
views are automatically updated in the combined view.

Anyone have a clue to share?

<Joe