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.
If by quantity you mean the ability to select a quantity of a certain product, here is our guide on how to do so:
If you are trying limit your products to a certain quantity available, I would recommend using the "Inventory" widget:
This thread contains a walk through of how to setup the widget using payments:
If you have any further questions, let us know and we will be happy to help.