How can I integrate a paypal subscription button into my form?

I am trying to have a paypal subscription button be my submit button for my form. Is there a way to do this? I have seen in the forums that this can be done via an option in properties, but I cannot seem to find where this properties option is located similar to what the forums were showing.

I need the paypal subscription button due the a header script that is tracking the button itself. The jotform will be embedded via an iframe into my website where the header script exists. 

The option to add a Logo in the submit button is available only in Legacy Layout, please go to your Form Settings, and select the Legacy layout:

Then you may use an image with your Submit button, so it looks like a PayPal Checkout button.

Here's the URL of the PayPal button image: https://www.paypalobjects.com/webstatic/en_AU/i/buttons/btn_paywith_primary_l.png