Projects in EIS are always related to an expedition.
Projects can be designed to be taylored to one expedition only or a range of expeditions, even expeditions over different years can be related to one project.
Projects are setup for each expedition by the scientific coordinator.
The projects (or parts of it) related to an expedition need the project working group and the project working group leader. The project working group need to be setup by the leader of the expedition.
This setup allows the expedition leader to invite the project working group leaders. With project working groups setup, the participants can be invited. Expedition leader and project working groupp leaders need to be invited as participants, too.