Sylius does not come by default with an internal role management system. In bigger eCommerce systems, you might want to restrict access to a specific group of users inside the admin panel. For instance, you don't want your content management team change the tax rate or payment methods, right? This plugin allows you to create a flexible role, set its privileges and associate it to admin users. Once you do it, the admin panel will display only features based on selected permissions. What is even more, it has a flexible architecture, that allows you to provide new roles easily, if they are not loaded automatically yet. You can check a demo under this link. Use "sylius" as login and password.