How to Get a Trainee to Understand Where the Ness Needs to Go?

In the old days, and I used to spend a lot of time doing what Admir calls video gaming, I used to try to get a circumferential spread around a nerve endpoint. So that was me not understanding what I needed to do and what was acceptable or sufficient. And also some of the new machines we referred to this before, they give you the ability to scribble on the screen. That's where an x-mark is spot. It gives them some guidance to work out where they need to get the needle.