As a pre-requisite for MYOB Practice tax, you'll need to enable your Assets online. Follow the steps below on how to do that.
You'll see the Maintenance > Maintenance Map > Client accounting menu even if you don't use Client accounting as a product.
To enable Assets online
Login to AE/AO
From the top menu, select Maintenance > Maintenance Map > Client accounting.
Click Client Accounting Settings.
In the Client Accounting Settings window, click Enable AE Ledger and Assets.
Click Yes in the MYOB Accountants Office window.