yith-woocommerce product add-on

i need to create some stores that must have product add-on value.
For restaurant delivery for example we need to add at fries some sauces…
This plugin is perfect for this but this function is not visible in the product loading screen of vendor. It is visible in product manager of wp instead.
Can i have a solution for this or there is a solution that you have tested or propose?
Thank you?