Login to Dragonnet (using HKIS username and password)
Select “Calendar “tab Select “Employee Calendar” 
Then select “Visit the iCalendar Feeds page”
This is to ensure you get the employee iCal feed and not the community one. 
Select the correct division
Click the “Update Feeds”
Right Click the “iCalendar Feed – Right click here for feed”
Copy the Link
Now login to your HKIS Google Calendar.
Within “Other Calendar”, select “Add by URL”
Paste in the previously copied link.
The job is done, your selected iCal feed will load and show within your calendar set.
Any issues, please email : help@hkis.edu.hk