Open Graph is enabled in the Template Options (Blog section) for each language
The og:description will be the introtext
The og:image will be the Featured Image of Helix (second tab when editing article in backend)
The disavantages are :
- that Feature Image appears in the front-end (even if a Full Image is set)
- one has to Upload a specific image (not possible to Select an existing image directly from the website)
- The Description cannot be different from the Introtext