The ATO is phasing in a new way of reporting tax withheld from wages (PAYGW) and employee Superannuation payments. This is part of the push to increase scrutiny and compliance for employers to be held accountable for superannuation guarantee.
From 1/7/18, employers with 20 or more staff on payroll are required to use Single Touch Payroll (STP) to report PAYGW and Super obligations to the ATO in real time.
This feature will be enabled through your accounting or payroll software.
The new reporting requirements will likely be rolled out to all employers (with less than 20 staff on payroll) at a future date.