You can add new events and update existing events by importing them from an external iCal file into your Calendar.

Import events from an iCal file

1. Select the course you want your events to be grouped under by clicking on it from the calendar menu.
2. Click Import Events.
3. Click Browse on the Import Events page to search for the iCal file containing your events. If you want to import the events into a specific group or section, select it in the Attendees drop-down list.
4. Click Open, then click Import.