Custom Walk animations?

Hello all, I’ve been making a humanoid avatar and it seems that I’ll be having to make my own custom locomotion animations, walking, crouch walking etc. I’ve been having no luck finding basically any info online about how to do it or how it works. I know about the blend trees and the single keyframe animations that are within the example in the SDK. The full walk anims that play in game don’t seem to be present in the example. Could anyone point me in the direction of a tutorial or explain how setting up custom walking animations on a humanoid rig works?