This manual has been created to describe the key components of the 10 days 100 challenges concept. It enables others (possibly you) to organize a similar open innovation event for a varied group of participants, students and professionals alike. It will go into detail about what aspects needs to be considered and why doing this kind of event is not only tangibly beneficial to all, but also very inspiring. Throughout this manual you will see event production information but then in some places, you will see how this manifested itself during the 2018 event we organised. This gives both general and specific guidance in producing a great event.