I familiar with that tutorial however where I'm at it doesn't help. In the image below I can create bones for the full body. But with the course I'm taking we created bone joints in PSD and took it to CTA5 to create the bones.
The video below shows the issue I'm having doing it Mark's way. ( I tried contacting hi, but this platform answers faster) I can always do it the way based on the tutorial you sent, I just want to see if I can do it his way.
The image is doing it your way which I knew how to do. The video is Mark's way where I have the issue.

Link to video
https://www.loom.com/share/275ef4b6bbe346f3bd7ae3952ca7d3ad