Creating a Microsoft PIN on Your Galaxy Book
It is recommended to set up sign-in options using a PIN or password to secure your Galaxy Book.
Create a Microsoft PIN
Navigate to and select Start > Settings.
Select Sign-in options.
Select Add under PIN.
Enter a PIN in the New PIN field. Re-enter the PIN in the Confirm PIN field.
Once you are finished setting up your PIN, select OK.
Your Galaxy Book is now locked with a new PIN.