At Maastricht University Courses are used for modules (blocks) and organizations are used for tuorial groups. For each tutorial group an organisation in EleUM is generated. Those organisations are by default not always available to students. A tutor can make the organisation available. For most faculties the template used for courses differs a little from the template for organisations resulting in a different menu on the left.
Organisations are also used for non-educational purposes, among other things making information about thesis work available.