1) A 'Subscribe Now' button that pays me, the programmer, an initial amount followed by a monthly subscription to my PayPal account. (I already know the PayPal code to do this.)
2) A second 'Buy Now' button that pays the licensee, whoever that may be, to his PayPal account.
I know that I can ask the licensee to create his own PayPal button and give me its 'Hosted Button ID', which I can then use in my code, but this is too error-prone. I want to program the second 'Buy Now' button to send the payment directly to the licensee's PayPal account by using ONLY the licensee's PayPal account email address.
How do I code the second 'Buy Now' button to do this, please?