Once you have officially enrolled in an ILV course, you must register for a group on Moodle UCLouvain depending on the language selected (Moodle is UCLouvain's teaching platform based on the open source software Moodle).
Moodle platforms exist for almost every UCLouvain course, including ILV language courses.
You can access Moodle, in just a few clicks:
Moodle UCLouvain ► [ILV] Institut des langues vivantes ► Language or Course Code