Board Thread:Support Requests - Getting Started/@comment-25770696-20160502222258/@comment-856287-20160502231106

You can see that is has been enabled here, and in the list of available extensions, it includes a link to the Google Calendar extension's page, which in turn directs you to the (old) documentation here.

It looks like you use. So if you view your Google calendar, the URL in your browser will be something like. Copy that long number on the end ("docid=") into the  tags, like this:. I assume then your calendar will show up there on the wiki page.