PrestaShop customer groups allow you to segment your customers or potential buyers in order to adapt the behaviour of your site to certain populations. For example :

• Display prices excluding taxes rather than including taxes.
• Offer a certain category of product.
• Assign a discount.
• Display a certain carrier.
• Activate a module;
• …

You can create groups in your PrestaShop back-office on the Shop parameters > Customers settings page in the Groups tab.

When creating a new group, you can specify whether this group should see prices excluding or including taxes, apply a percentage discount or decide not to display prices.

Once the group has been created, if you edit it, this time you have access to more options:

• Enable/disable modules specifically for this group.
• Add a discount on a category.

You can also enable or disable access to certain products or product categories to this group by editing them in your catalogue.

By editing a carrier from the Shipping > Carriers page, you can also reserve it for certain groups of customers.

To add a customer to a group, edit their Group access (and their Default customer group if the customer belongs to more than one group) in the customer's edit page accessible via Customers > Customers.