EASY HEADSHOT can ONLY be setup in MOD Central:

EASY HEADSHOT ONLY works well from medium range.  Once Easy Headshot is set in MOD Central:
  • WHENEVER YOU AIM DOWN SIGHTS, your aim will snap to the enemy target and slightly aim up towards the head.
NOTE:  If you have inverted your in-game camera, you will need to choose the Enabled Inverted setting.