Note:- In case attendance is change after generating salary then you can again repeat below given steps and generate salary again so system calculate salary based on newly locked attendance. 

Step 1:- Go to left hand side menu→ HR Manager → Attendance Details.

Step 2:- Then Go to filters and select the month and year for which you want to lock attendance to process Salary.

Step 3:- In top left corner of attendance table have check box to select all records or else you can do this only for selected users using checkbox shown before name of the user.

Step 4:-After selecting records in top right corner of table have option named ‘Calculate & Lock Attendance ’ click on it.

Step 5:- Then system ask confirmation for calculate and lock attendance if we confirm then attendance calculate and lock successfully.