To make objects reflective:

1. Drag the Reflection shader from the Asset browser and drop it on a model in the Viewer window.
2. Select Append to maintain the object’s original Global Lighting textures and any other applied shaders.
3. Expand the Reflection Type menu in the Reflection shader settings and select the appropriate reflection type from the menu. See Reflection types.
4. If you select a map shader, adjust the intensity slider and click generate.
5. If you want, you can drag a Material asset onto the object you want to make reflective from the Asset browser and adjust the Reflectivity, Specularity, and Shininess properties.

   See Material Properties area.