jump from one part to another

I am not quite sure if I understand your concern fully.

If you have a multi-page form and you would like your users to jump to specific pages based from their inputs, then that is possible using conditional logic. You can check this guide: https://www.jotform.com/help/350-How-to-skip-pages-using-conditional-logic 

If you wish to direct your users to another website or form after they submit the current form, you can do that by following this guide: http://www.jotform.com/help/317-Configuring-Change-Thank-You-URL-after-submission-condition 

Let us know if I misunderstood your concern, and please do provide us more details if that is the case.