Through workshops, trainings, webinars and other presentations on the ESPON TIA Tool that OIR has conducted in the past years, a number of people has come in contact with the sometimes complex functionalities offered by the upgraded version of the tool. There has been demand for a comprehensive yet accsesible guidance on the methodological background, the process of preparing and conducting workshops and the individual functionalities of the tool. Such a guidance sheet has now been produced by OIR to give interested people a first glance of what they can expect. It is now available at the ESPON-website.