The 2018 leave sheet is now available on the intranet:
Infos pratiques>Vie sociale>Temps de travail

You can also directly download:

The 2018 leave sheet

A guide to the 2018 leave and flextime systemPlease note that once you have downloaded your leave sheet, you should carry over your time credit or debit to January 2018. The completed document should be returned to the HR Department after the end of the month and before the 10th of the following month, together with any leave requests for core hours.