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.
Are you referring to showing or hiding a field depending on a field? If so, this is possible using condition in JotForm. You can learn more about condition in Jotform by checking this article: Smart Forms Using Conditional Logic.
Do let us know if you need further assistance.