Where's the button to "Save & Export to Google Calendar"

Where's the button to "Save & Export to Google Calendar"

I've read the article on how to use this feature but it doesn't show up anywhere.  What am I missing?
Where is this magical Save & Export to Google Calendar button and does it show up under certain conditions only?

The how-to article I read:  https://zohocrm.wiki.zoho.com/Exporting-Events-to-Google-Calendar.html