Assigning of material in classification view of other material

Dear all,

i have one requirement from the client as given below,

Suppose we have Material A where in its classification view, i would like to assign the Material B, then how should i do it. for example

Go to MM01,

Material A

     select classification view

          class type as 23

                    characteristics 1 = 20

                    characteristics 1 = 20

                    Material = B

if any other way around solution, then please let me know.

Regards

Praveer