Logging out from SFC is not the same as exiting the application. Logging out means that you make the terminal available for use by others, so that they can register their work. You are still registered as present. Log out by clicking your photo in the upper right corner of the screen. Any current actions will continue to run, and the next time you log in, the Current operation form will be displayed automatically.
When you go home, choose Exit. After you have accounted for your hours, choose Log out. Your status in SFC will now be set to 'Absent'.