Purchase Order Form - cart review

Is there a way to have a cart so the guest can review their purchase before checkout or add more items to the cart on my purchase order form?

I have this as my shop home and I want any of the next 3 forms to be used but after they add say Universal Tickets I want them to be able to then have the option to review their cart or continue to shop

http://www.jotform.us/form/41778444533158

You can use the "Preview Before Submit" widget, this will allow the user to view their responses and choices before submitting the form, just add it at the bottom of your form:

Then click on "Saved", and try it out, let us know if you have more questions , we will be glad to assist you.