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.
You can accomplish that following this guide: http://www.jotform.com/help/90-Form-Field-Positioning
Also, you can increase or decrease he width of your jotform depending on how many fields you want to have on the same line:
Let us know if you need further help, we will be glad to assist you.