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• Enable SSL. SSL means "Secure Sockets Layer", and includes TSL (for "Transport Layer Security"). Both are cryptographic Internet protocols which secure Web communications. You can read more about these protocols on Wikipedia: http://en.wikipedia.org/wiki/Secure_Sockets_Layer.
  Providing an SSL connection to your shop is not only excellent for any Internet exchanges, but also a great way to reassure your customers about the safety of their own data (authentication, credit card, etc.) on your shop, as modern browsers now display visual cues showing that the connection is secured. If your hosting provider does support SSL, make sure to activate PrestaShop's SSL support, by clicking on the link. This will reveal a selector, where you should choose "Yes".
• Increase Front Office security. This adds security tokens to your shop in order to improve its security. In effect, each URL is specific to a customer's session, and cannot be used as-is on another browser, thus protecting whatever information they might have stored during that session.
• Allow iframes on html fields. Since v1.5.5.0. The option enables you to put iframes in text fields, such as product description. Iframes are HTML elements that make it possible to load an external content into the page's own content. We recommend that you leave this option disabled unless necessary.
• Round mode. Once taxes and discount are applied, a price can feature too many decimals, such as $42.333333333. The round mode is used during the price calculation process (taxes, discount, etc.). There are three modes:
  • Superior. Rounding up: 42.333333333 becomes 42.34.
  • Inferior. Rounding down: 42.333333333 becomes 42.33.
  • Classical. It rounds the value up of down epending depending on the value: up when above .5, down when below .5.
• Display suppliers and manufacturers. The "Suppliers" and "Manufacturers" blocks can be removed from the front-end of your shop, by disabling their respective modules. Yet, using this option, you can have their list still be available, notably using the /manufacturer.php and /supplier.php URLs.
• Enable Multistore. New in 1.5. This little option has major implications: it turns your single-shop installation of PrestaShop into a multiple stores installation. This gives you access to the new "Multistore" page in the "Advanced parameters" menu, and every administration page can be contextualized to apply its settings to either all stores, a specific group of stores, or a single store.
  You can read more about PrestaShop's multistore feature by reading the "Managing multiple shops" chapter of this guide.
• Main Shop Activity. You might have set the wrong shop activity when installing PrestaShop. You can choose the correct activity here.

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• Registration process type. New in 1.5. You can let visitors create a new account without any immediate obligation to register an address, or force them to register an address as soon as they create their account.
  The first option makes it quicker to create account, which is great, but this will add a new mandatory screen once they want to validate an order, which can turn them off.
  On the other end, the second option makes account creation longer, but at least they will already have an address registered when they want to validate an order.
• Phone number. Likewise, you can require your client to register a phone number, or not. Having a phone number can prove invaluable to you, as this makes it possible to contact a client directly, but some client resent giving this kind of information. If you select "No", the "Phone number" fields will still appear in the address creation form, but they will no longer be mandatory.
• Cart re-display at login. If the customer had a cart that was not checked-out, display it once he or she logs back in.
• Send an email after registration. New in 1.5.5.0. You can have PrestaShop send an e-mail to any newly-created customer with a summary of his account information (email, password) after registration.
• Regenerate password. New in 1.5. You can choose to limit the frequency at which a customer can generate a new password for his or her account. By default, it is set at 360 minutes – 6 hours.
• Enable B2B mode. New in 1.5. The B2B mode brings a handful of new features to your store. Customers are no longer considered as individuals but as companies, and therefore some new options appear:
  
  • The customer profile has new fields related to professional information (Duns number in the USA, SIRET number in France, CNPJ number in Brazil, etc.),
  • prices Prices can be masked to specific groups,
  • prices Prices can be managed on a per-customer basis for the whole catalog or per category,
  • invoices Invoices can be generated manually,
  • etc.

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