HQ RESIDENTIAL HOUSE - How do i turn lights off?

i got the HQ residential house for free at the UE4 marketplace, i cant seem to get the interior or exterior lights to either dim or shut off. i am making a horror game so i would love the ability to maybe throw a toggle switch in the house for all the lights to turn off and on. i have selected the light, turned the brightness down to 1 and it just seems as if the room is still being lit from somewhere. please help!