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 you're using simple checkboxes, just need to use a checklist. Just put the items and users can check all they want.
And this is how it likes:
If this is not the problem you're having, please, just post it. More information could help.
If you are using a radio button field, these fields are used exclusively for selecting only one option. Using a checkbox field will allow for multiple selections.