Payment & Purchase order

[Woyce Batkins]

Hello,
I am testing the process of purchasing from a supplier and I got stuck at
the payment application step and don't know how to proceed. Here are the
steps I went through:
- Created a Purchase Order PO1
- Payment P1 was generated with value 1010 USD
- Voided the Payment P1 by mistake
- Created another Payment P2 with value 1010 USD
- Now I am stuck. I do not know how to link the new payment P2 to the
purchase order PO1 so that it is fully paid
Any Idea?