Custom Forms

I am looking at re-writing my websites in the new Websitebuilder. However on my current websites built using Sitebuilder Plus I have custom forms with drop down menus and check boxes etc. I was HOPING that the Websitebuilder would have more advanced custom forms - so for example selecting different drop down options would determine which page the user went to on submitting the form. However Websitebuilder seems to only have the contact form - and while this is more customisable than than the one in Sitebuilder Plus, I cannot see any other options for custom forms with list boxes, drop down menus, check boxes etc. All I can see is the contact form with fields to input text. Is this really the case or am I just missing something?!