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.
I'm not sure if I understand your question correctly.
Are you referring to something like this: http://form.jotformpro.com/form/50964329206962?
If so, you could use the field positioning to achieve this and a bit of custom CSS code to place a fixed width in the first column. Either way, feel free to clone that form to your account if you want to.
If you meant something else, please let us know and we'll be happy to provide further assistance.