Let me explain in detail what I want.
As you can see, there are two characters with the same materials.
In this situation, if I change the value of "1_Doi_Material(URP)" of the custom slot material, both characters will be affected by the material, and the bodies of both characters will change.
What I want is for both characters to have their own ""1_Doi_Material(URP)"".
So, if I change the value of one character's material, the shader of one character's body will change.
I'm not sure which method is the most correct and the solution.