SmartDraw's Automatic Shape Connectors automatically draw and adjust lines for you, but you can adjust the spacing of:
You can adjust the spacing of all shapes on your Org Chart at once. To adjust the spacing between shapes on the same hierarchy level, click the Box Spacing increase/decrease buttons in SmartPanel.
To adjust the spacing between hierarchy levels, click the Connector Spacing increase/decrease buttons.

To manually adjust a branch, click the connector to select it and a variety of handles appear along the line.

Clicking and dragging the black square
handles will change the length of all segments of a chain or branch equally.
Any white diamond-shaped handle
will adjust just one specific segment without keeping the spacing even.