Checkbox fields are designed to provide a limited list of options that your form users can select from. But what if there are options you did not consider, and somehow the form user does not have an option to select from your list?
The User Contributed Checkbox Widget is what you are looking for. It allows your form users to add more options to your check box list.
All they have to do is click on add option which will open a dialog with which they can type in the option they want added to the list - pretty cool, right?
You can later delete user contributed options by opening the form in the form builder and clicking on the red X next to the options.
JotForm's select box widgets give you stylish options for creating select boxes. Whether you'd like respondants to be able to drag and drop an orderable list or select a terms and conditions box, you can find the right widget for your needs.