How do I track payment submissions?

I would like to see a list of who has paid using the paypal payment option on the bottom of one of my forms. How do I do that? 

You can view a list of all your submission data directly from your JotForm account:

https://www.jotform.com/help/269-How-to-view-Submissions

Those who have paid via PayPal will have transaction details for their associated submission.