The light source options let you produce a range of lighting effects in your scenes.
Choose Assets -- light source and select from 40 watt sphere light, 20 watt sphere light, sun, 50 watt light source or 80 watt light source depending on how much light you want to add to the scene.
The light will be diffused, and is combined with other light sources in the room that would come from windows and the existing lighting in the scene. Note that each scene is lit differently; some are morning light, some are sunset or daylight. If you want a bright, well lit scene, we recommend you start with a scene that has that light and you can use a light source if you want even more light.
Enlarge the light using R hot key, move the light with the W hot key and rotate it with the E hot key to place it where you want to add light and control how much light you want to add.
You can use several light sources within the room. They only add light ; the frames are not seen in the final renders.