The aim of the course over two days is to teach delegates a range of standard solutions to common design problems faced when building more detailed time series forecasting models. After the course delegates should be faster and more effective in building reliable and flexible valuation and corporate planning and structuring models. The course will introduce delegates to a range of fundamental tools for flexibly referencing data and use these to build scenario managers and sensitivity tools. At the end of the course delegates should have a good working understanding of the process of building time flexibility into models and avoiding circularity and a range of other common design defects.