How to implement object level security which will also be applied on personalize visual

Hi POSPOS, thank you for you feedback.

Unfortunately, OLS does this with objects. I always think of it in the context of data consumption via dataset, connecting an Excel file, for example. In a single pbix file, what I would suggest in your case is:

1) Hide the column or entire salary table from all users.

2) Have a metric in DAX that calculates the salary but within it a variable that allows a certain group to see or not see the value.

.UserPermissionSalary = 
var us = USERPRINCIPALNAME()
return
LOOKUPVALUE(dim_PermissionSalary[mail],dim_PermissionSalary[mail],us,BLANK())

TheSalary = 
var salary = SUM(Salary[Salary])
var alowed = [.UserPermissionSalary]
RETURN
IF(ISBLANK([.UserPermissionSalary]),BLANK(),salary)

I made a sample file. I hope it helps.

If it works, please give me a KUDO and mark the solution as the answer to help other users.

Pbix File: https://drive.google.com/file/d/1Xbnce-WL2qg1O4SQZHU6xGI0tkOizyfU/view?usp=sharing