Multi-party communications taking place within organizations lead to different interaction modes between agents (e.g. (in)direct communication between roles, (in)direct communication restricted to a group, etc). Fully normative organisations need to regulate and control those modes as they do for agents' behaviors. This paper proposes to extend the normative organization model Moise in order to specify such interaction modes between autonomous agents participating to an organization. This specification has two purposes: (i ) to make the multi-agent organization able to monitor the interaction between the agents, (ii ) to make the agents able to reason on these modes as they can do on norms. The paper is focused on the first point. We illustrate with a crisis management application how this extension has been implemented thanks to a specialization of the Easi interaction model.