By default, the InsideCount property is 1. The InsideUnit property specifies the time scale unit being used to paint the inside zoom units. The InsideLabel property defines the label being displayed in the unit's header. For instance, if the InsideUnit is exHour, and InsideCount property is 1, the inside level displays if possible, the level from hour to hour. If the InsideCount property 4, the level displays the level from 4 hours in 4 hours. The InsideLabel and InsideUnit properties define also the resizing unit while the user creates, moves or resizes a bar. Use the ResizeUnitScale and ResizeUnitCount properties to specify the resizing unit in the chart.  

The following screen shot shows the hours being displayed from 8 to 8 hours:

The following VB sample shows how can I zoom or magnify the selected date to display the hours, from 8 to 8:

With G2antt1
	.BeginUpdate 
	With .Chart
		.PaneWidth(0) = 0
		.LevelCount = 2
		.FirstVisibleDate = #1/1/2008#
		.AllowInsideZoom = True
		With .DefaultInsideZoomFormat
			.InsideLabel = "H: <b><%hh%></b>"
			.InsideUnit = exHour
			.InsideCount = 8
		End With
		With .InsideZooms
			.Add #1/4/2008#
		End With
	End With
	.EndUpdate 
End With

The following VB.NET sample shows how can I zoom or magnify the selected date to display the hours, from 8 to 8:

With AxG2antt1
	.BeginUpdate 
	With .Chart
		.PaneWidth(0) = 0
		.LevelCount = 2
		.FirstVisibleDate = #1/1/2008#
		.AllowInsideZoom = True
		With .DefaultInsideZoomFormat
			.InsideLabel = "H: <b><%hh%></b>"
			.InsideUnit = EXG2ANTTLib.UnitEnum.exHour
			.InsideCount = 8
		End With
		With .InsideZooms
			.Add #1/4/2008#
		End With
	End With
	.EndUpdate 
End With

The following C++ sample shows how can I zoom or magnify the selected date to display the hours, from 8 to 8:

/*
	Copy and paste the following directives to your header file as
	it defines the namespace 'EXG2ANTTLib' for the library: 'ExG2antt 1.0 Control Library'

	#import <ExG2antt.dll>
	using namespace EXG2ANTTLib;
*/
EXG2ANTTLib::IG2anttPtr spG2antt1 = GetDlgItem(IDC_G2ANTT1)->GetControlUnknown();
spG2antt1->BeginUpdate();
EXG2ANTTLib::IChartPtr var_Chart = spG2antt1->GetChart();
	var_Chart->PutPaneWidth(0,0);
	var_Chart->PutLevelCount(2);
	var_Chart->PutFirstVisibleDate("1/1/2008");
	var_Chart->PutAllowInsideZoom(VARIANT_TRUE);
	EXG2ANTTLib::IInsideZoomFormatPtr var_InsideZoomFormat = var_Chart->GetDefaultInsideZoomFormat();
		var_InsideZoomFormat->PutInsideLabel(L"H: <b><%hh%></b>");
		var_InsideZoomFormat->PutInsideUnit(EXG2ANTTLib::exHour);
		var_InsideZoomFormat->PutInsideCount(8);
	EXG2ANTTLib::IInsideZoomsPtr var_InsideZooms = var_Chart->GetInsideZooms();
		var_InsideZooms->Add("1/4/2008");
spG2antt1->EndUpdate();

The following C# sample shows how can I zoom or magnify the selected date to display the hours, from 8 to 8:

axG2antt1.BeginUpdate();
EXG2ANTTLib.Chart var_Chart = axG2antt1.Chart;
	var_Chart.set_PaneWidth(0 != 0,0);
	var_Chart.LevelCount = 2;
	var_Chart.FirstVisibleDate = "1/1/2008";
	var_Chart.AllowInsideZoom = true;
	EXG2ANTTLib.InsideZoomFormat var_InsideZoomFormat = var_Chart.DefaultInsideZoomFormat;
		var_InsideZoomFormat.InsideLabel = "H: <b><%hh%></b>";
		var_InsideZoomFormat.InsideUnit = EXG2ANTTLib.UnitEnum.exHour;
		var_InsideZoomFormat.InsideCount = 8;
	EXG2ANTTLib.InsideZooms var_InsideZooms = var_Chart.InsideZooms;
		var_InsideZooms.Add("1/4/2008");
axG2antt1.EndUpdate();

The following VFP sample shows how can I zoom or magnify the selected date to display the hours, from 8 to 8:

with thisform.G2antt1
	.BeginUpdate
	with .Chart
		.PaneWidth(0) = 0
		.LevelCount = 2
		.FirstVisibleDate = {^2008-1-1}
		.AllowInsideZoom = .T.
		with .DefaultInsideZoomFormat
			.InsideLabel = "H: <b><%hh%></b>"
			.InsideUnit = 65536
			.InsideCount = 8
		endwith
		with .InsideZooms
			.Add({^2008-1-4})
		endwith
	endwith
	.EndUpdate
endwith