Subjects are added from the CSPM "Subjects" GUI:
Click New
Add the subject, including any detailsdetails, then Close the GUI.
To see the new subject, click on the "ALL" filter:
Since the subject is not associated with a project, any project filter will hide the new subject. A subject is associated with a project in the Project configuration stage, once you add a project study linked to that subject.
A project is a collection of groups with studies in each group. Since a subject could belong to more than one project, we cannot link one subject to one project.