If it is not already configured, you should assign the correct Line Manager to each User's account.
Navigate to the Menu and click Organisation and Users.
Click on the Users tab on the left-hand side.
Search for the User by typing their name into the box (you can also drop the By Name list down and choose to search by something else, such as Username). Click on the magnifying glass.
Click on the Username.
Click Set Line Manager link from the Common Tasks area.
You can also click on the Line Manager tab on the left-hand side if you prefer.
Click on the Set Line Manager button.
Type the Line Manager's name into the Filter box and click on Search.
Click the radio button next to the Line Manager's name to select them.
Click on OK.
The Line Manager will be set against that User.