Using imitation learning

Hi, I would like to use imitation learning on my game.

I read this documentation; https://github.com/Unity-Technologies/ml-agents/blob/master/docs/Training-Imitation-Learning.md

It shows the demonstration recorder but it doesn't show which player inputs it is recording.

- How to specify what it is need to record?

Is there any up to date tutorial for imitation learning?

Thank you.