While publishing a product, I want to open a new page on submit. I guess same can be acheived using Addon but not sure. Please suggest a way to achieve this.
Hi, please go to the Form (Container Block), All Properties view.
Change the property Redirect To Page after submitting: point it to the page you want.
You can also customize how it work via this API https://world.episerver.com/documentation/developer-guides/forms/redirecting-to-thank-you-page/