The active View is the main portion of the Slate Material Editor interface. It is where you create material, map, and shader trees by wiring together material, map or shader, and controller nodes. For instructions, see Material and Map Nodes in the Active View.
You can create a number of Views for materials in your scene, and choose the active View from among them. See Creating and Managing Named Views.
To move a material tree to a different view:
To place a copy or instance of a material on another view:
3ds Max opens an Instance (Copy) Material dialog.
To move among different Views of an instanced material:
3ds Max makes the View you choose active, and pans it to the material node.
You can also move to another View by right-clicking one of the child nodes of the material node.
To make a material instance unique: