I want to set all cells in a 6X4 table to a default value of zero. How can I achieve this?

That's possible by prepopulating the boxes through URL parameters.

Guide: http://www.jotform.com/help/71-Prepopulating-the-fields-to-your-JotForm-via-URL-parameters

You can also use this app to make the preopulation easier for you http://prepopulate.jotform.io/. The app also provides a short URL if you prefer to use it instead of the long URL.

Demo: https://www.jotform.com/62061033936955?q10_3Financials[0][0]=0&q10_3Financials[0][1]=0

If you need further assistance, let us know.

Thanks for the quick response. But does it mean that if I prepopulate the fields, the form URL will change?

Yes, the URL of the form that you'll share will be changed since you will pre-populating the fields. If you want, you can use a URL Shorterner web apps.

First, use the Prepopulate App to generate a form URL. After that, you can use a 3rd party web app that will shortened the URL for you. You can use Google URL Shortener or TinyURL.

Hope that helps. Thank you.

Oh, is there no way to retain the same URL and prepopulate table values? :(

Unfortunately, that is not possible. You can embed the form on your website and publish the page instead of the direct form URL. You can use our iframe method:

https://www.jotform.com/help/148-Getting-the-Form-iFrame-Code

Just replace the URL in the iframe with the prepopulated URL.