If you have the wrong manager set on your profile, you can fix this by going to your profile. Click here to learn how to update your profile.
As an administrator, If a user wrongly chose another person as his/her manager during setup, you can help the user select the right manager by first going to People -> People page where you will see a list of everyone in the firm. Select the user to view the user’s profile. Scroll to the bottom of the page to edit the user’s manager.