The derived property Product list allows you to select a few products based on their article number. This is often used in the sorting option for newsletter products. The products that you fill in here get a specific value, which allows you to push the products to the top. Navigate to Catalog > Derived properties and select the Product list option.

You'll fill in the product numbers based on a property. This could be based on the SKU or the EAN code. You can select a property in the derived property.

The large field allows you to type the EAN codes on each line. Note that Tweakwise will consider the order of these EAN codes in the sorting of products.