For PDF generation of coupons, you will need a web browser (only tested with Chrome at the moment). Currently, the path to the web browser is hard-coded in `src/pdftools.py` (you can seek for `PATH_TO_CHROME_EXE` variable).
Schedules (track/timeslot/duration) are hard-coded in `src/exam.py` at the moment.
Configuration variables can also be overridden using environnement variables, for instance: