To add your feed to your Google Calendar. You'll need to log in to your google account on the web at calendar.google.com

In the 'Other Calendars' section to the bottom left of the screen, click on the down-arrow box to display some options. We need to select 'Add by URL'

Paste in the feed URL into the box and click on 'Add Calendar'.

Your feed should now show in the 'Other calendars' section.

You may want to change the name of your calendar to something more readable. To to this, click the down-arrow box next to your new calendar and select 'Calendar settings' which will give you the option to rename to something like 'My Rotas'.

You may need like to add notifications for your ChurchBox calendar. To to this, click the down-arrow box next to your new calendar and select 'Edit notifications'.

Here you can choose to receive notifications and/or email remainders of events minutes, hours, days, and weeks before the event.

If you need to see the calendar on your Android device, you will be able to manage it in your Android settings.

Be aware that it may take up to 24 hours for the calendar to show up on your devices once it has been added to your Google account.