Texture / UV button that I can't find

So I’ve been following this tutorial, which was done in an older version of blender, where I can’t find this one thing the maker pressed.


At around 26:30 he speaks of a special setting that must be pressed in order to make sure it’s UV mapped. I can’t find this on the newest version that I’m using, and I think that’s why my material isn’t working.

Any help is appreciated, thanks, really need to finish this tonight !