As part of the PEN project, a set of Selected Instruments for Multilevel PoLicy and impact Evaluation (SIMPLE) modules were developed for physical activity and diet. These modules intend to assist in standardising data collection on physical activity and diet indicators in existing surveillance systems. On the following pages, three infographics provide an overview of the SIMPLE modules in general (FAQs) and the indicators selected for the physical activity and diet modules. The Guidance Document contains the full versions of each SIMPLE module and a description of their methodological development.