6 demo BO, however I could not scroll down to base of the side menu to entry the module. This is because by default the menu isn't going to scroll, so that you can't view the hyperlinks to the bottom. There is a free module available to make the menu https://addons.prestashop.com/en/seo-natural-search-engine-optimization/31857-automatic-google-rich-snippets-json-ld-open-graph-seo.html