Changing or updating your beneficiary is simple. All you need to do is login to your online account, select ‘Beneficiaries’ under the ‘My super details’ tab and follow the prompts. 

If you don’t choose a beneficiary, or your nomination is invalid, the trustee may use discretion to decide the beneficiaries in accordance with Superannuation Law, and this may not be to your estate. 

There are certain conditions for nominating a beneficiary, so for full details and exclusions, take a look at the PDS.