Comment on GCALDaemon

There is a GUI for the config in the newer versions, but you have to go dig it out.

In the terminal, go to:
/usr/local/sbin/GCALDaemon/bin/config-editor.sh

There's a few other little 'utilities' in the /bin too. Although I'm not sure how to make a shortcut to this so you can run it like a normal app.