Conceptual modelling is a mature management approach, likes supply chain management within virtual enterprises. This approach is confronted with the challenge to transform from a current centralized approach towards an open and collaborative approach. This paper elaborates on the challenge to enable the collaborative editing of certain modelling information. This decentralised decision making process is known as cooperative decision making, which had been first transferred into the world of conceptual modelling, second implemented in different alternatives on ADOxx.org and third tested within the EU-project eHealthMonitor and transferred as proof of concept in the EU-project BIVEE.