How to load data from BW cube to BPC Excel Client?

Hi BPC Experts,

I have a custom BW cube using a generic extractor.

Now, I want to make the data from the BW cube accessable to the BPC Excel Client.

What is the standard practice for doing this? Must I first build a BPC Staging Cube then load the BW data into the staging cube or can I just access the BW data directly from BPC Excel Client? What are the steps to building a BPC Staging Cube?

Please help with this question.

l_sap