Missing Preview Scene Settings options


I am missing some of the options in the Preview Scene Settings that can be seen here. Preview Scene Settings | Unreal Engine Documentation
I am missing the Animation, Mesh, Additional Meshes, Settings from the Preview Scene Settings. Can someone help me figure this out? I am using UE 4.15.3
And for context, I am following the following tutorial. Adding The AK-47 Weapon - #8 Creating A First Person Shooter (FPS) With Unreal Engine 4 - YouTube

Maybe the Documentation is out of date but I found that these settings have been moved to the Scene Setup which can be accessed by clicking the down arrow that’s in the left top corner of the viewport.