The Control Stick in 2014 TV models replaces the "Local Keys" on the TV.
Pressing the stick (and keep it pressed) will turn the TV on or off
Moving the stick backward or forward will change the program number
moving the stick to the left or right, will decrease or increase the sound volume
Pressing the Control Stick shortly will show a menu on the screen as below
In this menu move the stick to the left and press to select an Input
After this, the input selection screen will appear and a input can be selected