To configure this module, you need to:

#. Go to *Sales > Configuration > Settings*
#. On the group "Pricing", select the option "Discounts" to grant discounts on
   sales order lines.

Setting a default sales discount:

#. Then, go to *Sales > Orders > Customers*.
#. Create or modify a customer.
#. Go to "Sales & Purchases" page.
#. In the "Sales" section, there's a field called "Default sales discount (%)"
   where you can fill the default discount percentage.
#. This value can only be filled at company partners, not for contacts.