Hey @srinival ,
are your users organized in AD groups?
For example all the users from controlling US are in an AD group called "Controlling_US". If they move to controlling UK they will by HR or IT be transferred to the AD group "Controlling_UK".
In Power BI you can give then access then to specific AD groups. Like this you make sure everyone will just see what they are allowed to see. And you never have to touch the row level security anymore.
If you need any help please let me know.
If I answered your question I would be happy if you could mark my post as a solution ✔️ and give it a thumbs up 👍