Give me your data and I will give you a QlikSense app to bring insights to life in interactive visualizations capable of drill-down investigation. Need to reduce the data for different roles of users? I can write a section access to handle data reduction for your users and roles, so people only see the data they are allowed to access! I prefer separating the logic from the presentation layer, so you will find all the expressions defined in the load script, with master items referencing these expressions.