Help center › Administrator app
PIN code to open the app
Protect the app if the phone lies at the counter.
"More" tab → "PIN code lock" → "Enable PIN". Come up with a code: after that the app will ask for it every time it is opened. You can change or disable the PIN in the same place.
The PIN protects access to the app on this phone. For staff use a separate phone with a PIN code without telling them the account password.