POWER BI SERVICE - Admin
https://docs.microsoft.com/en-us/power-bi/admin/service-admin-administering-power-bi-in-your-organization https://docs.microsoft.com/en-us/power-bi/admin/service-admin-role Also covers assign users to an admin role in Microsoft 365 Admin Center https://docs.microsoft.com/en-us/power-bi/admin/service-admin-portal