I am going to be using a safecracker form with zoo-visitor to create membership profiles.
I want to have a field where you choose 1,2,or 3 and if you choose 1 the next field gives you options in a multi select list for 1a if you choose 2, you choose from a list 2a and so on.
Is there anything built in I could use or does it require some custom ajax or is a multi page form the best option?