How to manage multiple form fields?

How can I copy parts of my forms

You can copy multiple fields and duplicate it in the same form. Kindly follow the guide below on how you can manage multiple form fields:

https://www.jotform.com/help/242-How-to-Manage-Multiple-Fields

Kindly note that with the above you can not move the copied form fields to another form. You can however use clone feature to clone the whole form to a new form: 

https://www.jotform.com/help/242-How-to-Manage-Multiple-Fields