What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
Please review this user guide https://www.jotform.com/help/57-Smart-Forms-Using-Conditional-Logic
Base on your initial description, what you need is a multiple pages form and you will use the condition option Skip to page or end of the form
from the user guide
Skip to a page or end of the form
Allows users to jump to a part of your form according to their choices. Depending on user’s previous answers, you can ask additional questions on a new page, or simply end the form.
Hope this help. Inform us if you need further assistance.