Dynamically adding a product into the checkout
I play around with the product option app from hulkapps.
It is a little bit buggy but I think when I write the support they can help me with fix the problem. But my real question is how technically they add a product in the checkout process.
Let me give you an example.
First I am on the product page and add a new product into the cart
After that I click on the cart and see the product (here are some zero bugs if I change the quantity but this is not my question)
Now I click on Check Out and see a new product in the product overview "Customization Cost for Tesproduct Hulk".
In admin panel I don't see any new product they created.
So my question is how I can create a new product (via API) and insert this into the checkout process without create a new product that is not visible in the product overview?
