YITH WooCommerce Product Add-Ons allows you to configure additional options that can be added to product 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.
You will only have to activate both plugins to make them work together. Combining both plugins allows you to add any possible add-on the product shows, to the quote request. It will then be possible to receive the complete quote requests that will include products you are offering additional options for.
For more information about how to set up YITH WooCommerce Product Add-Ons, check the full documentation here.