Send an email to your Student Office Administrator by clearly indicating:
The category: Tronc commun / Finality / Options / Electives Courses that you want to add to your PAE of this year
If you have an Additional Module (Module Complémentaire), do not forget to add the prerequisites which were communicated at your enrolment
Be mindful: your PAE should not exceed 60 ECTS
See here below concrete example for someone enrolled in program ECON2M1 after 30/09:
Subject: Last Name - First Name - ECON2M1 - Late Arriving - Bloc 1
Dear Mrs. Porreweck,
Could you register the following PAE for this academic year: