To process wages in advance, process the payroll as you would normally do, remembering to change the PPE date to the future date.
STP Note: As each EFT bank file is generated, an STP Pay Event will be created (as normal). Report them as they are created. Report the Pay Event to the ATO after each bank file has been uploaded to the bank. The ATO requires you to report a Pay Event on or before payment date, so it is acceptable to report your Pay Events in advance.
The pay day (payment date) is the Date to process EFT file on the EFT Information Summary screen in the Electronic Funds Transfer Wizard.