flexibility in choosing the source bank while process EFT

Summary:

flexibility in choosing the source bank while process EFT

Content (required):

We have the business requirement to have flexibility in choosing the source bank while process EFT.

For example, for a specific payroll, for a specific pay period, client to choose source bank A. 

And n the next pay period, we want to choose source bank B.

We created multiple source bank for one organization payment method. But while processing prepayment, though we have not given any source bank,

system automatically pick the Bank A. During EFT processing, if we give source bank B, the process doesn't pick up any employee.