1. From the home screen, swipe down from the Notification bar.
   
2. Tap the Settings icon.
   
3. Under the Display tab, tap Lock screen.
   
4. Tap Select screen lock.
   
5. Tap the desired screen lock method.
   Note: For this demonstration, 'Knock Code' was chosen.
   
6. Tap Next.
   
7. Enter the desired knock code.
   
8. Tap Continue.
   
9. Re-enter the desired knock code.
   
10. Tap Confirm.
    
11. Tap Next.
    
12. Enter the desired backup PIN.
    
13. Tap Next.
    
14. Re-enter the desired backup PIN.
    
15. Tap OK.
    
16. Knock Code is now set.
    
17. To use the knock code, at the lock screen, tap the knock code sequence in the designated area.