The project management page is used to create new projects, and change the list of contributions and participants for each project. There is no direct link between contributions and users: the links are established through the projects.
The administrator can organize projects as a tree, which is handful when there are a lot of contributions. To change the tree structure, click on the "Sub-projects" button for the parent project on the project management page. The list of sub-projects can then be changed for this project. A user associated with a project is implicitely associated with all the descendant projects. An export of the parent project will contain all the contributions of the parent project and its descendants.
