Can't get "Sun size" "Sun" "Atmosphere thickness"
When my friend created a new material, named it "skybox" and then changed the shader from standard to skybox procedural, they got the following. Note the "Sun, Sun Size, etc" Two of my other friends have easily gotten the same results. 
However, when I do the same, I get this: 
How do I get the former?
Thank you very much for your input. I am new to Unity.
screen-shot-2017-08-07-at-24627-pm.png
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fullsizerender-2.jpg
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I have the same problem, very frustrating trying to follow tutorials!
Any help would be greatly appreciated..
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