Generating a Google Sitemap in PrestaShop can be done with just a few clicks through the PrestaShop Back-end panel.
First go to the Modules tab and search for Google Sitemap, which comes preinstalled with PrestaShop default installation.
To set specific parameters to the Google Sitemap like which pages to be listed in it, how often to check for new pages that are created and add them (we recommend to set it up to check once a day) you need to click the Configure button just under module.
Once on the configuration page, you will see all options and select those that fit your needs.