6 demo BO, having said that I couldn't scroll down to base of the facet menu to access the module. This is because by default the menu isn't going to scroll, in order to't see the back links in the direction of the bottom. You will find there's free module accessible https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-google-rich-snippets-json-ld-opengraph-twitter-tags-schemaorg.html