Note:-This rights only for HR mangers.
Step 1:-Login with HR manger username and password.
Step 2:-Go to left hand side HR Manager→ Payroll.
Step 3:-In top right corner there is option called ‘More’ click on it and then select ‘Past Salary Details’
Step 4:-Select the year in drop-down and after that click on month for which you want to check past salary.
Step 5:-Now you can see all users past salary if you want then you can use filters for to search particular group or user’s salary.