function FirstChild() {
    let shpDiagram
    let dgnRoot
    let dgnFirstChild
    let dgnLastChild
    let intCount

    //Add organizational chart diagram to the current document
    shpDiagram = ActiveDocument.Shapes.AddDiagram(msoDiagramOrgChart, 10, 15, 400, 475)

    //Add the first node to the diagram
    dgnRoot = shpDiagram.DiagramNode.Children.AddNode()

    //Add three child nodes
    for(intCount = 1; intCount <= 3; intCount++) {
        dgnRoot.Children.AddNode()
    }

    //Assign the first and last child nodes to variables
    dgnFirstChild = dgnRoot.Children.FirstChild
    dgnLastChild = dgnRoot.Children.LastChild
}