Click on the gear icon to open the Manage Calendar window:

The Manage Calendar Window has the following options:

• Export – export the selected calendar in .ical format (more on iCalendar format).
• Make Public/Private – When set to private, the calendar is not publicly accessible.
• Delete (Calendar) – Delete a calendar. Warning: all its events will be removed permanently!
• Edit (Calendar) – Edit calendar title, description, and color etc.

Note that the globe icon links to a public URL for that specific calendar.