PageControl

no help tem um exemplo veja

TTabSheet.Create

este exemplo é do próprio help do Delphi

This example dynamically creates a Page Control, then a series of Tab Sheets on the Page Control.

procedure TForm1.FormCreate(Sender: TObject);

const
TabTitles: array[0..3] of ShortString = (´Customer´, ´Orders´, ´Items´, ´Parts´ );
var
i: Integer;
PageControl1: TPageControl;
begin
PageControl1 := TPageControl.Create(Self);
PageControl1.Parent := Self;
PageControl1.Align := alClient;
for i := Low(TabTitles) to High(TabTitles) do
with TTabSheet.Create(PageControl1) do
begin
PageControl := PageControl1;

Name := ´ts´ + TabTitles[i];
Caption := TabTitles[i];
end;
end;

espero que vc entenda e isto tenha ajudado.