Your database needs to be upgraded to MYOB Insolvency 2019.03 (v5.2) in order to submit BAS electronically.
From the "Main" menu, select "Application Settings".
Navigate to the "Advanced Settings" tab.
The "Enable BAS Lodgment via SBR" check box appears.
Tick the option and click the "Save" icon on the Toolbar.
Electronic BAS lodgement is now enabled.
Note: You will need a "system administrator" logon to access the Application Settings.