Ken Puls is the controller/director of IT at the Fairwinds Community & Resort on Vancouver Island, British Columbia. He also runs Excelguru Consulting Inc, a company dedicated to helping users get the most out of Microsoft Excel, and is a winner of the prestigious Microsoft MVP - Excel award. He lives in Vancouver. Miguel Escobar is an Excel MVP and a consultant and expert on business intelligence, PowerPivot, Excel, Power View, and SharePoint. He is the author of Fórmulas DAX para PowerPivot .