I have made a web application to a company that provides users to input all invoices their company have paid. The company has departments in all cities and users can only see the data related to their cities. Now I designed an OLAP cube to provide them to analyze the data. Users open an excel pivot table over the application and connect to the SSAS but they can reach to the entire data.
My question is how can I show only the data related to their cities over SSAS? Any help will be appreciate.