How to active a PagesAutoHidden page from Button event?

[vManTech]

KryptonDockingWorkspace w = kryptonDockingManager.ManageWorkspace(kryptonDockableWorkspace);
kryptonDockingManager.ManageControl(kryptonPanel, w);
kryptonDockingManager.ManageFloating(this);

kryptonDockingManager.AddAutoHiddenGroup("Control", DockingEdge.Right, new KryptonPage[] { NewPropertyGrid1(), NewPropertyGrid2() });

private void Button1_Click(object sender, EventArgs e)
{
    // How to show/active/select NewPropertyGrid2() page ?
}