[XtraChartsLocalizableCategory(XtraChartsCategory.Behavior)]
public double GridOffset { get; set; }

<XtraChartsLocalizableCategory(XtraChartsCategory.Behavior)>
Public Property GridOffset As Double

using DevExpress.XtraCharts;
using System;
using System.Collections.Generic;
using System.Data;
using System.Windows.Forms;

namespace AggregationSample {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e) {
            chart.Series.Add(GenerateSeries(20));

            XYDiagram diagram = chart.Diagram as XYDiagram;
            if (diagram == null) return;

            diagram.AxisX.NumericScaleOptions.ScaleMode = ScaleMode.Manual;
            diagram.AxisX.WholeRange.SideMarginsValue = 0;
            diagram.AxisX.NumericScaleOptions.GridSpacing = 2;
            diagram.AxisX.NumericScaleOptions.GridOffset = 1;     
        }
        Series GenerateSeries(int pointCount) {
            Series series = new Series {
                Name = "Random data",
                View = new SideBySideBarSeriesView()
            };
            Random generator = new Random();
            for (int i = 0; i < pointCount; ++i) {
                series.Points.Add(new SeriesPoint((i), generator.Next(10)));
            }
            return series;
        }
    }
}

Imports DevExpress.XtraCharts
Imports System
Imports System.Collections.Generic
Imports System.Data
Imports System.Windows.Forms

Namespace AggregationSample
    Partial Public Class Form1
        Inherits Form

        Public Sub New()
            InitializeComponent()
        End Sub
        Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
            chart.Series.Add(GenerateSeries(20))

            Dim diagram As XYDiagram = TryCast(chart.Diagram, XYDiagram)
            If diagram Is Nothing Then
                Return
            End If

            diagram.AxisX.NumericScaleOptions.ScaleMode = ScaleMode.Manual
      diagram.AxisX.WholeRange.SideMarginsValue = 0
            diagram.AxisX.NumericScaleOptions.GridSpacing = 2
            diagram.AxisX.NumericScaleOptions.GridOffset = 1
        End Sub
        Private Function GenerateSeries(ByVal pointCount As Integer) As Series
            Dim series As Series = New Series With {
                .Name = "Random data",
                .View = New SideBySideBarSeriesView()
            }
            Dim generator As New Random()
            For i As Integer = 0 To pointCount - 1
                series.Points.Add(New SeriesPoint((i), generator.Next(10)))
            Next i
            Return series
        End Function
    End Class
End Namespace