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.
Unfortunately there is no such widget that can dynamically add columns on the form.
Most of the widgets only add Rows. It is because fields in the form will appear as column in the form's submission data view - which cannot be modified/customized.
If you want to have another column in the submission, you will need to add a field on the form.
The closest alternative I can suggest is using the Configurable List Widget.
The configurable ist widget have a lot of customization options that will allow high customization of the form.
user guide: -How-to-Set-Up-the-Configurable-List-Widget
Let us know if there is more we can assist you with.