Setting up your calendar feed:
1. You just have to click your circle avatar and go to settings.
2. Once you access the settings of your account you just copy the iCal URL and add it to your calendar.
3.1 If you're using Google Calendar navigate to other calendars and select "Add by URL".
3.2 If you're using iCal open the File menu, select New Calendar Subscription and paste the URL there.
3.3 If you're using Outlook 2016 go to the Calendar. Next, go to the Home Tab in Outlook 2016 and click the "Open Calendar" dropdown. Select "From Internet" and just paste your URL Calendar feed into the field.