In this part of the tutorial, we'll turn the emissive signs into light sources with soft shadows.

In the Content Drawer, in Enlighten/Materials, double-click the M_SignsDecals material.

The material opens in the the Material Editor.
In the Details panel, under Enlighten, enable Use Static Enlighten Emissive.

This makes sure the material emits light with color and intensity derived from the Emissive output of the material graph.

Make sure you don't enable Use Dynamic Enlighten Emissive by mistake!
In the Material Editor toolbar, click Apply.

The Apply Changes... progress bar is displayed.
Close the material browser and wait for the shaders to finish compiling if necessary.
Changes to materials used as an Enlighten light source sometimes don't take effect immediately. To make sure the changes take effect, under Build > Enlighten, select Update Static Albedo.
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In the World Outliner, double-click the actor Sign_Hash to focus the view on the sign.

The sign emits a small amount of green light, visible on the wall.
In the Content Drawer, in Enlighten/Materials, double-click the MI_Sign_Hash material.

The material opens in the Material Editor.
In the Details panel, under Parameter Groups > Scalar Parameter Values, set the Emissive Value to 10.0.

This parameter controls the material's emissive brightness. Higher values make the material glow more brightly.
Close the material editor.
To make sure the light changes take effect, under Build, select Update Static Albedo again.

The sign now emits more light.
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4. Add light sources

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