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.
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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.
Unfortunately radio buttons assume the user would like one specific selection from that category. If you would like for them to be able to select and deselect options within the field, I would recommend using a check box. You could also possible add another option to your radio buttons for "None" or something of that sort as an option if they change their mind.
Let us know if you have any further questions and we will be happy to help.