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.
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Did you meant positioning the Textboxes fields in column formation?
You can do that be positioning the fields.
Check this user guide https://www.jotform.com/help/90-Form-Field-Positioning
Using the field positioning you can arrange each texbox in column formation on same row like this
Perhaps you were looking for the Matrix table type of fields?
Hope this help. Inform us if you need further assistance.