How to setup payment approval rules for payment method = Check

Summary:

We already have custom AP payment approval rules in the application. The conditions are mentioned as below. Things are working fine in the PROD instance.

(a) If PPR Batch Total Amount <=50K, then approval notification would go to User A and User B simultaneously and anyone can approve the PPR.

(b) If PPR Batch Total Amount >50K, then approval notification would go to User A first. Once User A approves, then it would go to User B. Finally User B approves the PPR.

Now we have an additional requirement. On top of existing above conditions, additional approval hierarchy needs to be there.