Assign Global Foreacast from Demantra into many Organization

Hi,

We are working on global foreacast from Demantra Application. I want to divide this forecast in ASCP, assign it into the organization using the historical structure od sales from that organization. Now i simple use the soucing rule and assign it into assignment trough category. i do it manually. This way works but give not give exact results and takes a lot of work. Does anyone have the same problem ? How to deal with that issue more automaticly ?

thans in advance for your help

regards

Marcin