To add the lab calendar to your personal Google Calendar:
(1) Go to your GCal page, and look to the left side: "other calendars" --> "add a friend's calendar"
(2) Type "ium41ol1o98t3em7v4l5qdqen8@group.calendar.google.com" and click the "+"
OR (1) Click the little "+Google Calendar" button at the bottom of the embedded calendar widget.