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.
You can enable it in your account settings page. Here's a screenshot:
You can also create a new form and go back to the My Forms page. After that, select the form and click the More drop down menu then select the Edit in V4.
Hope that helps. Let us know if you need anything else. We'll be happy to assist you.