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.
We have a very detailed guide on this page [GUIDE: How-to-clone-an-existing-form-from-a-URL] on how to clone a form. It's accompanied with screenshots too so it's easy to follow. To sum it up, all you need to do are the following:
1. Get the URL of the form you want to clone
2. On your Dashboard, click CREATE FORM > IMPORT FORM > select FROM A WEB PAGE > paste the URL > then CONTINUE
Once cloned, you'll be redirected right into your Form Builder where you can start editing that cloned form.