Is it possible to create a Material Group Hierarchy in SAP ECC?

Hi,

I'm trying to create a Material Group Hierarchy (not a Product Hierarchy) in SAP ECC.

I've read some discussions about this theme:

MM Material group hierarchy ?

but still I'm sure if it is possible to create a Material Group Hierarchy  in SAP ECC or if it is only an IS Retail functionality.

Thanks in advance,

Luis.