1. First, you create an approval process for Payment request at Settings/ Approval
If your process has multiple approvers, when you enable the "Only 1 person needs to approve the transaction" option, your transaction will only need approval from 1 person.
2. Approve invoice as instructed at https://helpcenter.gtssolution.vn/article/approve-purchase-invoice -> Then create payment
3. Select Payment Record tab and view payment detail 
4. Select Send approval request
5. Log in with your approver account and select Approval.
==> Result: 
