A brainstorming session was organized on May 23, 2024 on the Usquare site to introduce the new OpenLab.Brussels coordination team and to reframe, together, its new objectives and priority actions. The working day brought together different profiles and colleagues from ULB and VUB and was structured around two main moments: firstly, the prioritization of actions identified in our vision document and, secondly, the mapping of resources needed to implement these priorities. Thanks to a productive and focused dialogue between the participants, this charter was modified, completed and specified, taking into account feedback from all parties, as well as their needs and expectations with regard to a place dedicated to the support, valorization and dissemination of participatory research within the Brussels-Capital Region.