Every time you need to get into the system you will have to log in and log out once you are done.

To log in, once you are at the log in screen, you can simply enter your PIN provided by your employer and then press Enter. If correct it will bring you to the point of sale system.

To log out, once you are at the Sale screen, you click your name at the top right corner of the screen then scroll down to the Log Out button and click it.