Across a site collection, various sites maintain their own calendars. Meanwhile, users have requested that events for those subgroups be aggregated and displayed on a master calendar.
Question: Out-of-the-box (OOB), how can I aggregate calendar events from multiple calendars onto a master calendar?
Think departments within a division; each department with its own SharePoint site with its own calendar, and division with its master calendar used to show selected aggregated events from the departments. Some department events may not be suitable for displaying on the division calendar. How do I do this in SharePoint OOB?