Install the plugin with the HikaShop or Joomla installer and publish it.
Open its settings and choose where the products come from. For the related products, fill in the Related products tab of your products.
Optionally, create a coupon in HikaShop and type its code in the plugin.
Configuration
Block title: the title shown above the products. Leave it empty for the default one ("You may also like"); to change that default text for good, use a language override.
Products to offer: where the products come from: "Related products of what was bought" (the Related products tab of your products), "Bought together by other customers", or "A list of products" (the ones typed in the next setting). When there are not enough products from the source you chose, the list completes them.
Product ids: the ids of the products to offer, separated by commas (for instance 12,34,56), in the order they are shown.
Number of products: how many products to show, from 1 to 8 (3 by default).
Days after the order: the thank-you page can be opened again from the order email; the offer is hidden after this many days (7 by default). 0 shows it for ever.
Coupon code: the code of a coupon created in HikaShop. It is shown under the products as a code to use on the next order. Leave it empty to show none.
