::From your current ICal suscriptions::
*Open your ICal - go to your current Calendar subscriptions on the right - choose one and click-right with the mouse to show the preferences - Choose: Copy URL to clipboard or 'Get info' to get the link
*Add this link to Details
*You will see the external dates on Details: 24 hours later.
*Open your ICal - go to your current Calendar subscriptions on the right - choose one and click-right with the mouse to show the preferences - Choose: Copy URL to clipboard or 'Get info' to get the link
*Add this link to Details
*You will see the external dates on Details: 24 hours later.