The Information available for decision making has grown very fast this recent decade. With the development and the innovation of smart technologies, it's probably going to grow even faster in the future. Information nowadays is collected and stored in data banks; some of them can be analyzed and understood. To do so most of scientists use nowadays statistic techniques, some are simple, and the other require high complex statistical Knowledge. To be analyzed, information needs to be converted into quantifiable and explainable information, this explainable information are what we call Knowledge. The results of the analyze in this book are based on the linkage between employees in stores and controlling services, the following questions have been taken as basis for the study: Does work with indicators affect the sale process and so the computation of KPI? If yes with indicators are used in the sale process? Can the employees' motivation be improved based on indicators? And finally has the communication to employees, with the help of indicators, an impact on their motivation and so on the development of their sales skills?