How in Unity when clicking on the button the form for creation of the application opened?

groza23092004 · 2019-04-01T17:23:10.000Z

(Avito example, there when you click the form opens and it fills with information about the product that you want to sell)

groza23092004 · 2019-04-20T07:18:21.000Z

we must create button and plane)easy