How do I change names of product fields?

I selected the PayPal Pro Payment Form and now I want to change New Product 1, New Product 2, etc., add a few 'products' and change their names/amounts.  I can't see where I can edit this info in the form builder.

Thank you for contacting us.

Is this the form you are working on http://www.jotform.com/53052973407153 ?

To change the names and amount of your product fields inside of your Form Builder select your payment field and click on Wizard option. 

Then when you enter your Paypal account details click on next button until you are on Payment Wizard: Products page. To add new product click on Add New Product button

To edit product name and amount, select your product and then you will be able to change their name and amount. At the end click on Save Product button. 

Hope this will help. Let us know if you need further assistance.