Before you can start paying superannuation with MYOB's super portal, you need to enter the details of the bank account you'll use to pay super. You'll authorise this bank account to make payments when you complete the signup for MYOB's super portal.
The account should be one of your actual bank accounts, not an MYOB Essentials bank account.
Enter your bank details
To enter your bank account details for paying superannuation, go to the Payroll settings page (Payroll menu > Payroll settings) and enter your account name, BSB and account number in the Pay superannuation settings section at the bottom of the page, then click Save.
Note that when you make a payment through MYOB's super portal, it won't be recorded against the equivalent account in MYOB Essentials. See Recording super payments made through MYOB's super portal for how to record these payments.
See Pay superannuation for more details on what else you need to set up before you can start paying super.