Using the Drag-and-Drop Feature to Move Materials Between Palettes

In the Palette/Material tree, select the material to move.
(Optional) Use <Ctrl> data points to select other materials to copy.
Materials may be selected from multiple palettes in the tree view.
Drag the material(s) to the palette to which you want the materials moved.
If you are moving materials to another material palette that has materials of the same name, the moved materials will have a number appended to their names. You then can rename them.