By default, the ButtonsAlign property is UpperLeft. Use the ButtonsAlign property to specify the position where the +/- buttons are displayed on nodes. Use the HasButtons property to display the +/- buttons for nodes that contain child nodes. Use the HasButton property to hide the +/- button inside a particular node.

The following VB sample displays the +/- signs on the upper left corner:

With ChartView1
    .HasButtons = exCircle
    .ButtonsAlign = UpperLeft
End With

The following VB sample displays the +/- signs on the middle left border:

With ChartView1
    .HasButtons = exCircle
    .ButtonsAlign = MiddleLeft
End With