As the customer shows in the image, when you have several series in a chart, and each series has a different set of labels, you may want the TChartGrid to show the labels of all the series, not only the labels from the first series.

The same happens with the Colors.

procedure TForm1.FormCreate(Sender: TObject);
var i: Integer;
const nItems = 5;
begin
  Chart1.View3D:=False;
  Chart1.Legend.Hide;

  Chart1.AddSeries(TBarSeries).FillSampleValues(nItems);
  Chart1.AddSeries(TBarSeries).FillSampleValues(nItems);

  for i:=0 to nItems-1 do
  begin
    Chart1[0].Labels[i]:='Series 0, Item ' + IntToStr(i);
    Chart1[1].Labels[i]:='Series 1, Item ' + IntToStr(i);
  end;

  Chart1.Align:=alClient;
  ChartGrid1.Align:=alBottom;

  ChartGrid1.Chart:=Chart1;

  ChartGrid1.ShowXValues:=cgsYes;
  ChartGrid1.ShowColors:=True;
end;