Help me

hi guys. i just started using unreal engine and i need your help. I am using the plugin called “Good Sky” and I connected it with DirectionalLight and set the day and night cycle but there is something I can’t do. I want to turn the lights of the buildings in the “City Sample Buildings” plugin on and off according to the cycle. I couldn’t find any settings or buttons and as I saw in the forum, I have to play with the material. I’ve done that, but how can I set it according to the day and night cycle?