Nikola Ilic locks things down:
You’ve heard about the Oblect-level security feature in Power BI, but you’ve also heard that you CAN’T configure it directly from the Power BI Desktop? And, that you must use an external tool, such as Tabular Editor, to configure and manage OLS.
Well, this is not the case anymore! With the new TMDL view in Power BI Desktop, you can define Object-level security directly in the Power BI Desktop.
Read on for a tutorial on what it takes to implement object-level security.