Forecast disaggregation

Hi all,

i am new to the planning and i would like to understand something on forecast disaggregation. It seems that is possible only to disaggregate by product/location. One of the requirement we have here is to disaggregate the forecast also by customer. I want to understand if it is possible to have such a disaggregation. Here are used to make analyze demand by customer percentages and they want to make such percentages analysis also on the forecast.

Another question I have is about where the forecast data is stored. Is it stored into a cube or just in the livecache. We would like it to be stored into a cube so that we could be able to built some reports.

thanks in advance for your help

Marco