You need to first determine whether the individual is a contractor or an employee. Visit the Difference Between Employees & Contractors page on the ATO website.
For contractors, PAYG withholding is not required unless the contractor enters a voluntary agreement.
For superannuation, you are only required to pay a contractor super if you hire them for their personal labour, despite them working under an ABN.
With the 2021 Federal Budget, the government has introduced some changes to the superannuation system which will roll out over the next few years.