You can control more features or external devices connected to your LG CineBeam projector by using the buttons displayed on your projector screen:
1 Press the button on the remote control.
2 Using the remote control, select your desired button on [More Actions] displayed on your projector screen.

1) You can set up the universal remote control. You need Magic Lighting Remote to use universal remote control
function. (The provided remote control differ depending upon model.)
2) External input information is displayed on the screen.
3) When the projector malfunctions, you can get help to solve the problem. The types of buttons appearing on the [More Actions] vary, depending on the
region and the type of connected device. The configurable items differ depending upon model

Related post:
LG Projector Magic Lighting Remote User Guide
How to Install Apps on LG CineBeam Projector?
How to Pair Magic Lighting Remote with LG CineBeam Projector?