Strange comment re "this option is not available with any bank in Australia."
The BPay web site has the following
Streamline your business with Batch payments
If your business makes multiple payments to one or more billers, then BPAY Batch payments are a fast and efficient solution. By compiling payments into a single batch file, you can process thousands of payments simultaneously, while keeping control of the timing and source of every transaction. This may also minimise manual processing and reduce administrative costs — all with the security and reliability of BPAY payments.
Contact your financial institution to learn more
NAB have file format for it. - NAB Connect Consolidated File Format Specifications March 2015
6 BPAY Batch
6.1 Functional Description
The BPAY Batch file can be sent to NAB until 5.00pm (AEST) at the latest for same day processing. Files
received after this cut-off time may be rejected and will need to be resubmitted the following Banking
Business Day with the Processing Date changed reflect that day’s details.
6.2 BPAY Batch file format
This file has fixed length record of 144 bytes.
The file extension is .bpb
Commbiz also have an option to import a BPay file.
About time this was catered for in MYOB, we are in the 21st century afer all and BPay has been around for a very long time.