LG CineBeam Laser 4K Owner's Manual page 66

Checking and editing [Quick Access]
Press and hold the number 0 button on the remote control.
The [Quick Access] edit screen appears.
1 Selecting a number that has already been registered allows deregistering
it.
2 When you select a number that has not been registered, items that can
be registered will be shown.
3
An item that has been registered to a different number is indicated with
a check mark.
4
You can view a brief instruction for this function.
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