Auto-create fund record from a cost bp

I would like to create a purchase order record  from the contract record.   Currently, the person who will create the PO receives a task.  They will create the PO, then go back to the original task to attach the PO and auto-populate the PO information.     I am looking for ways to streamline this process. 

Similarly, I would also like to create a voucher record from the payment applications. 

Purchase Order and voucher are both non-workflow BPs.