To log out of the Point of Sale, click the Log Out button:
This will take you to the Point of Sale login screen. A username and password must be used to log in, and then the register must be selected.
Alternatively, you can keep the current register open and just switch the active cashier. To do this, use the Switch Cashier button instead:
Forcing cashiers to log in for each transaction
If you wish, you can force cashiers to log in at the start of each transaction. To do this, follow the steps in this article: How do I set up the POS Cashier Quick Switch?