public Shift(int _dayofmonth, int _checkinhour, int _checkinminute)
{
flag = ShiftFlags.Presence;
dayofmonth = _dayofmonth;
checkinhour = _checkinhour;
checkinminute = _checkinminute;
}
public void CheckIn(int _checkinhour, int _checkinminute)
{
flag = ShiftFlags.Presence;
checkinhour = _checkinhour;
checkinminute = _checkinminute;
}