A simple app that scrapes your list-view class schedule then places this as entries in your student calendar
Go to the student portal then click on Student > Timetables > My Class Schedule > List view
There's an input box where you can put the ID of a specific calendar you want to use. If you leave it blank, they will go to your default account calendar.
This extension will ask you to sign in to chrome for this to work. Your default calendar with be the one associated with whatever google account you're signed in as. If you want to use your student calendar, make sure you had edit permissions to that calendar for whatever chrome account your are signed in as.
You can find your calendar Id by going to your calendar specific settings.
If you're already signed in to the Griffith Portal you can go to directly to this link.