As a rule, when changes to the calendar occur, students are promptly notified via the site’s messaging system by the professor. Students are requested to check the calendar and the messages daily. However, in the event of unforeseen events (unexpected illness, accidents, etc.), it may not be possible to warn you. Missed lessons will be rescheduled in calendar slots marked as “Recovery lesson” or other time free time solts. These time slots are provided only for catch-ups and (unless otherwise communicated) do not indicate actual lesson hours. However, students are invited not to make commitments in correspondence with these time windows, as they may be converted to actual lessons.