ORIGIN GROUP in Planning layout for PS

I have a rather tricky proplem at the moment. I would need the origin group in the planning layouts for PS planning (CJR2 planning) besides the cost elements (= Seperate Line for the combination of origin groups / cost elements). The wish is to perform a planning by cost element and sub-planning on origin group level ( = material types are classified with origin groups). In Actuals it is possible to create reports including the origin group as well, the only thing we are missing is the planning on this level.

Layout should look like follows:

Cost Element AAAA Origin Group AAA Plan Cost Value

Cost Element AAAA Origin Group BBB Plan Cost Value

Cost Element AAAA Origin Group CCC Plan Cost Value

Cost Element BBBB ------ Plan Cost Value

Any ideas of how this is possible within the standard ?.