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.
How can I allow multiple checkboxes to be checked in a form?Asked by bnussbau on April 27, 2016 at 12:33 PM
Checkbox field is for multiple selections. It allows you to select one or more options.
If you mean a feature where you can select all the options all at once, this widget provides that functionality http://widgets.jotform.com/widget/select_all.