You can either download the ICS Calendar or sync your the ICS to your calendar. If you choose to download, you will not receive updates if changes are made to the calendar. If you choose to sync, the calendar on your device will receive updates automatically.
Option 1: Download. Simply click the download link and import into your calendar.
Option 2: Sync. Copy the following URL to your clipboard. https://outlook.office365.com/owa/calendar/81237fd9b1964b44b2cab0d8794ff2ee@saintonge.org/cbd880ff3b1c4afd9f2c57e03eaf3f9715801158834857201316/calendar.ics