How to change Channel of PIP sub-screen in Samsung TV's?

a). Press MENU key (  ) from TV remote.

b). Select Picture option and press ENTER key (  ) from TV remote.

c). Select PIP option and press ENTER key (  ) from TV remote control.

d). PIP window will open on TV screen. Select PIP and press ENTER key (  ) from TV remote control.

e). Select On option and press ENTER key (  ) from TV remote control.

f). Select Channel and press ENTER key (  ) from TV remote control.

g). Active channel number will be highlighted use up navigation key (  ) and down navigation key (  ) to change the channels accordingly.