how to set up repeating information in one step

If I understand correctly, you want to have a set of fields that can be repeated quickly if necessary?

The Configurable List Widget may prove useful for your form.

http://widgets.jotform.com/widget/configurable_list 

This widget allows the user to add another set of fields by clicking one button. Here's a guide on how to add the widget to your form: How to Add a Widget to your Form

Here's a demo form so you can see the widget in action: https://form.jotform.com/60417580570959

If you like, you can clone it to your account by following this guide: How to Clone an Existing Form from a URL