How do I view Average Balances?

You can find multiple visuals inside the Loan and Deposit Chapters. They'll provide the average balance amount by ProductID/Product Group/Service Group/Lifestyle, etc.

The Average Balance column can be accessed by scrolling to the far right. You can also apply a dashboard filter, that will customize the visuals' subset. The average balance columns are also available upon the export of that visual utilizing the Power BI toolbar.