public void UnassignEmployeeFromShift(int employeeID, int shiftID)
{
Employee employee = fullListemployees.Find(x => x.WorkrID == employeeID);
Shift shift = presentAndFutureShifts.Find(x => x.ShiftID == shiftID);
shift.UnassignEmployee(employee);
if (!stageforChanges.Exists(i => i.ShiftID == shift.ShiftID))
{
stageforChanges.Add(shift);
}
}
