JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Please take a look at this cloned version of your form: http://form.jotformpro.com/form/50768478253971
Is this how you want to make the checkboxes look like? If so, feel free to clone the form to your account.
Or, you can also set the width of the field in the form designer.
Let us know if this helps.