Org microdata or Open Graph markup. Exclusively, the height have to be a minimum of 120px, and When the width is below 100px, then the aspect ratio has to be no bigger than three.0.” URL of a picture or logo to the event or tour. Like a picture can help https://addons.prestashop.com/fr/seo-referencement-naturel/31857-seo-automatique-google-rich-snippets-json-ld-open-graph.html