How to set Pattern lock in Samsung Galaxy S5(SM-G900H)?

a). From the home screen, tap on Apps as shown below :

b). Tap on Settings and then tap on Lock screen as shown below :

c). Tap on Screen lock as shown below :

d). Tap on Pattern and draw the unlock pattern that you want to set on the screen as shown below :

e). Now tap Continue. Draw the unlock pattern again and tap on Confirm as shown below :

f). Now enter the Backup PIN and tap Continue as shown below :

g). Enter the backup PIN again to confirm it and then tap OK as shown below :

Pattern lock in Samsung Galaxy S5 (SM-G900H) is now set properly :