You have upto 10 calendars that need to be “overlayed” as one single calendar. Pretty easy – create a new Calendar and simply use the “Calendars Overlay” to get the other 10 calendars.
What if only certain items were to be filtered for, and displayed in the top Overlay Calendar?
- Create views for the individual calendars, based on the “Calendar” view, apply filters as necessary – this is a new View
- Goto the top “Overlay Calendar” and edit the child calendar to show the newly created view