Multi step form with c# MVC5, related tables

Question

I've read several articles and stackoverflow posts regarding multi step forms in ASP.net MVC5 C#, but nothing is providing the answer I need.  The most intuitive was from this site: http://www.c-sharpcorner.com/UploadFile/4b0136/getting-started-with-wizard-in-Asp-Net-mvc-5-part-1/

 

The issue is, it's not addressing the whole reason I'm splitting up this form into multiple steps.  I used EF DB first and backed the database into my Visual Studio project.  So I have my model classes built already based on that.  Now I need the multi step form that will honor the relationships I've setup in my database.

 

More specifically, in step 1 I want the user to add the product name, the product type, and the product delivery date.  That part I have setup.  Then when that's submitted I want the application to move to step 2 where, based on the product type, the user will enter the base type (related to product type), and product derivates (related to product type).

 

Please help!

New to MVC (formerly ColdFusion).