The Engage2020 project will make an overview of potential praxis in Horizon2020 for societal engagement in research and innovation and related activities, with the aim of increasing the use of such praxis. The overview will cover praxis of existing policies and structures, of methods, approaches, tools and instruments, of promising new or adapted policies/methods, and of praxis which specifically is suited for engaging society in R&I activities related to the six Grand Challenges.Engage2020 will set up a frame, which can embrace all potential approaches to engagement by treating all four levels of complexity in research and innovation activities – a) research policy formation, b) programme development, c) research project definition, and d) engagement in the concrete research or innovation activity. For each of these complexity levels praxis will be structured according to which types of participants the specific praxis can include (CSO’s, citizens, affected, consumers, employees, users, others…).Because of the time frame for Horizon2020 the project is constructed to be able to commence work in autumn 2013 and deliver main results already in autumn 2014, so that the results are ready for inclusion in the 2015 calls of Horizon2020. After autumn 2014 the results will be specified/adapted for use on specific Grand Challenges and dissemination towards large user groups will begin, so that proposers to the 2014 calls may be able to use the outcomes directly in their proposals.The project includes a very strong dissemination and communication strategy in order to ensure proper uptake of the results by the broad range of users group.The Engage2020 consortium consists of experts and practitioners on participation in STI related issues at all levels of engagement, and includes expertise on the MASIS reports.