This document provides guidance for participants in the ISEEC IEUI competition on applying principles of industrial and systems engineering to develop solutions. It outlines five key principles to consider: multidimensionality, analyzing components and their connections, taking a holistic and helicopter view, considering solutions from end-to-end, and co-creating value with customers. Participants are encouraged to demonstrate how they have addressed these principles, for example by showing different perspectives considered, diagrams of component relationships, impacts at various system scales, planning for implementation and disposal, and involving customers in needs analysis. The document emphasizes that problems result from complex connections, not just individual issues in isolation.