Key Figure, Two level disaggregation

Dear All,

We can have One level of KF disaggregation using the by specifying Disaggre. KF in the settings of Planning Area.

But my Problem is that I would like to have Two level disaggregation based on two different ratios. Pls refer to below example.

Hierarchy:

A

Ratio1(Aggr. of Bn=C1.+...Cn)- B1 B2 B3

Ratio2- C1 C2 C3 C1 ......... C4 C1 C2

What I would like to achieve is that Sales Forecast must be disaggregated to as per Ratio1 KF into B1.. Bn. Then each Bn level must ve disaggregated as per Ratio2 KF in Level C.

How can I achieve this Two level disaggregation in my DP Planning book?

Can APODPDANT be of any help?

Thanks in advance.