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.
I presume that you have one jotform that is built the exact way that you want it and that you would like to create a new one, that would be the same, just having few more extra fields, but without changing the first one.
With JotForm Builder, that is easy. Please take a look here: How to clone an existing form from your account?
If you have been thinking of something else instead, do let us know.