This option allows administrators to impersonate another user. With this function an administrator can log into a users account without knowing his or her password. The administrator will view the system exactly as the user would. To end a mimic click Log Out. After this is done the administrator must log back in if s/he wishes to continue working.
With mimic the sign out option becomes available.
Log out signs out a user, ends the session and removes his or she authentication from the current browser. If s/he wishes to use the system again s/he must log back in.