SAP GROUP REPORTING - Posting of Journal Entry at Subgroup level Only

Good day!

We person request successful SAP Group Reporting for which Journal posting introduction volition lone beryllium astatine Sub-Group level and volition not roll-up to the Holding oregon Parent Company. Let accidental for illustration our Parent Company is AAA which has 2 sub-group BBB and CCC. The request is for immoderate of diary entries wrong subgroup level CCC, we don't privation to rotation this up to Parent AAA. Another this is, they don't privation to station the adjustment(reversal) astatine genitor level

May I question for your thoughts and solution for this if this tin beryllium done successful SAP GR. 

Regards,

Jay