If your POS has multiple users, there will be a need to switch users whenever a user's shift is over. If you have the "Shift Management" feature enabled, you will have to end any open shift in order to switch to another user.
Without any shift open or started, exit from the KaHero POS application. Upon opening the application again, you will be sent to the log in screen. Select the new user.
The new user can now navigate through the app using their own credentials.