Locomotion System Basics

I'm a newbie going through the Locomotion System Tutorial and just cannot figure out how to add a "Character Controller". Looking at the included demo scenes, there's a "Controller" on the root position in "Hierarchy", but I'm unable to include this when I'm working through the tutorial. Any suggestions?

Select the character that you want to add the character to in the scene hierarchy. For example, in the scene "Step Walk" (under Demo Scenes / Scenes) that would be either "Coyote" or "Heron" or "Human".

Then, in the menu, select: Component / Physics / Character Controller.

Of course, in that example, the character controller already is added - but you can follow those same steps in your specific scenes.