Explanation Scenario: The region_id column can be managed by only one sales manager. You can use Username() or userprincipalname() in DAX with Row-Level Security. Within Power BI Desktop, username() will return a user in the format of DOMAIN\User and userprincipalname() will return a user in the format of [email protected]. Reference: https://docs.microsoft.com/en-us/power-bi/admin/service-admin-rls