You can operate many of the televisions features by using the UP, DOWN, LEFT, RIGHT and OK buttons on the remote control.
The following remote control buttons are used to navigate the menus:
XXX.GLF (back) - Takes you one step back in the menu. Press and hold to exit from the menu and return to the source or Home screen.
ARROW BUTTONS - Navigate around the options on the screen.
OK - Selects the option highlighted or selected.
Your TV can also be voice controlled using Google Assistant.