Installation : Step 1: Upload the module zip file from the back-office Module & Services menu tab. Module Manager location using the upload button. Following productive installation module menu link will look from the still left menu or the highest menu within the back-office more region. Move two: Install the https://addons.prestashop.com/en/seo-natural-search-engine-optimization/41205-custom-html-css-js-on-selected-pages.html