YITH WooCommerce Product Add-Ons allows you to configure additional options that can be added to products in your shop. For each option, it’s possible to choose a name, an image and a price, which will add up to the basic ones the product has.
To make the two plugins work together, you’ll only have to activate both plugins. The two plugins combined allows you to create add-ons, which you can add to “Composite” type products. Add-ons are strictly related to the main product, not to the sub-products that compose it (Like ‘Materials’ in the example above).