That means after inner cone, light slowly loses its illumination as it goes to outer cone. Within inner cone, light achieves full brightness and between inner and outer cone a falloff takes place, which softens the illumination. There are two cones (inner cone and outer cone). Since all shadows casted by this light will be parallel, this is the ideal choice for simulating sunlight. Unreal Engine 4 features four different types of light Actors. Since Directional Light casts light from an infinite source, updating their location has no effect. Once a light is added to the level, you can use transform tool ( W to move, E to rotate) to change the position and rotation of your selected light. From there you can drag and drop various lights.
