I need advice on how to implement a character editor

SORRY FOR THE MECHANICAL TRANSLATION. MY ENGLISH SKILLS ARE WEAK , SO IT WOULD TAKE A LONG TIME . THANK YOU FOR YOUR UNDERSTANDING.


Hi all. I need advice on creating a character editor within the game. The goal is to create an AAA level character editor with full body, face, etc. customization (I understand how difficult this can be, however, I need it). I understand how to implement this through a morph target and sliders, in such an implementation there should be no problems, but I am interested in the ability to change the location of the eyes, for example, pulling them, as well as with hands. Simply put, I need to replace the sliders with full character-player interaction. Anyone have any thoughts on how this can be implemented?
If I’m not quite clear, you can see how the editor is done in Black desert there is something I’m aiming for.