Hello James,

Maybe you could achieve desired behavior using "CheckBoxVisibility" and AllowAddNew properties. Please take a look at the attached sample for more details. If you have any questions, do not hesitate to write us

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
namespace UltraGridWithThreeBandsAddRows
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
 
            ultraGrid1.DisplayLayout.Bands[0].Columns["A"].Header.CheckBoxVisibility = Infragistics.Win.UltraWinGrid.HeaderCheckBoxVisibility.Always;
            ultraGrid1.DisplayLayout.Bands[1].Columns["C"].Header.CheckBoxVisibility = Infragistics.Win.UltraWinGrid.HeaderCheckBoxVisibility.Always;
            ultraGrid1.DisplayLayout.Bands[2].Columns["E"].Header.CheckBoxVisibility = Infragistics.Win.UltraWinGrid.HeaderCheckBoxVisibility.Always;
 
 
            ultraGrid1.DisplayLayout.Bands[0].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
            ultraGrid1.DisplayLayout.Bands[1].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
            ultraGrid1.DisplayLayout.Bands[2].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
        }
 
        private void ultraGrid1_BeforeHeaderCheckStateChanged(object sender, Infragistics.Win.UltraWinGrid.BeforeHeaderCheckStateChangedEventArgs e)
        {
            switch (e.Column.Key)
            { 
                case "A":
                    if (e.CurrentCheckState != CheckState.Checked)
                    {
                        ultraGrid1.DisplayLayout.Bands[1].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.No;
                        ultraGrid1.DisplayLayout.Bands[2].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.No;
                    }
                    else
                    {
                        ultraGrid1.DisplayLayout.Bands[1].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
                        ultraGrid1.DisplayLayout.Bands[2].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
                    }
 
                    break;
 
                case "C":
                    if (e.CurrentCheckState != CheckState.Checked)
                    {
                        ultraGrid1.DisplayLayout.Bands[2].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.No;
                    }
                    else
                    {
                        ultraGrid1.DisplayLayout.Bands[2].Override.AllowAddNew = Infragistics.Win.UltraWinGrid.AllowAddNew.TemplateOnBottom;
                    }
                    break;
 
                case "D":
                    break;
            
            }
        }
    }
}