Add an event to two or more calendars at once.
I have several calendars due to being in multiple virtual teams. I'd like to be able to update them simultaneously rather than having to add the same appointment in multiple times.
This has been asked for by several people in the following forum as well:
Allow users to create an event and post it on multiple calendars at the same time so for instance your work calendar and family room shared calendar can see the same event without having to post two events