YITH WooCommerce Product Add-Ons allows you to configure additional options that can be added to product in your shop. For each action, it’s possible to choose a name, an image and a price, which will add up to the basic ones the product has.
You will only have to activate both plugins in order to make them work together. After that, you can configure the product options from YITH > Product Add-ons and assign them to your products — even bundle products.
For more information on how to set up add-on options, check the complete documentation here.