Paying a vendor where the vendor has multiple bank accounts

Hello, we have a vendor where for majority of their invoices they have their main bank account we pay, however for some of their other invoices they want us to pay into a different bank account. We pay them via ACH with the Electronics Bank Payment bundle, however I'm not sure how we can actually do this. Since it's based on the vendor's bill, is there a way when we create the vendor bill in NetSuite to flag the bill to pay into the other bank account? If there is a best practice for this situation that would