Your will automatically check the iCalendar link for updates every two to three hours, if you need to trigger the system to update in a more immediate timeframe, you can follow the steps below to have the system immediately re-query the feed.
Who can use this feature?
System Administrator | Owner | Publisher
Instructions
Navigate to Modules and on the Content tab, select Calendar
Select the category containing the iCalendar feed
Select Actions
Choose Modify from the drop-down menu
Go to the end of the iCalendar Feed URL
Add a space at the end of the iCalendar feed URL
Delete the space from the end of the iCalendar feed
Click Save Changes