How to move points from a body?

I am new to Shapr, and just learn the basics.

How can I move points from a body?

I do understand that this is not polygon modeling, that’s what I am used to coming from max or Blender.

But once I have those lines on the body, and I need to make proper adjustments. I am stuck. I can’t position vertex points, and therefore I don’t understand how to proceed to get my modeling done.

Perhaps there is a short video tutorial that could explain that, how to model from an image reference.

I used of course a sketch, and from the sketch (outlines) I created the basic shape. But that’s not enough, I need to control the vertex points of the bevel, to follow precisely the concept design.

Thx a bunch for any little help,
appreciate it