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.
It depends on the type of field you are using. If you are using check-box fields you can set up the minimum and the maximum number of selections:
You can check this form that has a check-box required field that needs 3 options to be selected so the form can be submitted:
Is this a solution for you? If not please provide us the form's url and the type of field in which you intend to implement this solution.