Welcoming URLs are to be set while in the configuration webpage of each and every product or service, classification, or static information webpage. This generation web page is simply useful for some automated web pages, and usually you won't have to worry about these.   You specify the key URL https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html