"Crew Rest" is intended for Crews around the world who need to divide a specific amount of time in different rest / work periods. Typically, it is used by Flight crews (Pilots and Cabin Crew) on long haul flights. You give the app the time range available to your crew for these rests / work periods and it generates a timetable of the different times at which these periods will start and end depending on the sequencing you have chosen. For anyone reading this with no knowledge of airline operations, dont worry, crew rests are normal, scheduled and only take place on long haul flights in order to ensure a perfect level of alertness upon arrival ! NOBODY is asleep at the controls ! ! Fellow crewmembers enjoy and treasure that sacred rest!