JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Thanks for your question. I saw my colleague has already advised you in this thread-http://www.jotform.com/answers/270585
Also we raised a feature request, which you can find in the following thread-
You may make multiple forms for each mailchimp group then they can make a master form with a drop-down selector for a mailchimp group- which will redirect to the correct group.
For further help, please get back to us.