Leg animation using ML Agents - leg setup

Hi All,

I am trying to create a leg (only one) that I will further use to train it to walk using MLAgents. However, before being able to run any algorithm, I need the leg to be properly set up. I have used Unity Walker environment and some of the settings used there, but I am struggling a lot since many days to make it move.
Anyone has any idea how to do this? Is it even possible to have only one leg that can move naturally? If it would be possible (and I assume it is), what settings do I need to add? what components?
Thanks to anyone who would be able to help in any way!