Here's what I basically need:

Video explanation of what I need.

I can provide the javascript code I created if you need it. The thing is that I want that exact same functionality but with jetformbuilder. To this day, no one on any forum has been able to help me out without having to tweak the business model, which is obviously something that is not possiblee given that this is a running business currently using Google Forms to achieve the results.

Additional information can be provided upon interest.

*Spanish is not a requierement, although it could help understand the overall process and the terminology involved in the form.