Not able to override the remit to account in a payment process request

Summary:

We need to be able to select a different bank account number in the proposed payment review in Payment process request

Content (please ensure you mask any confidential information):

The Doc ID (Doc ID 2687475.1) says the following:

1. Navigate to manage payment options, select Allow payee bank account override on proposed payments.

>>I can't see that option in my payment options, but only: Allow override of supplier site bank account. this is not exactly same option description

2. Navigate to manage disbursement system options, select Allow payee bank account override on proposed payments at BU Level.

>>I can see that option but not where to select the BU