How to display connection lines for multiple orders
1.Select the resource Gantt chart.
2.Click on the [Display Settings] button on the toolbar to display information about the display settings in the properties window.
3.Change the value of the property “Objects for which to show connection line” in the Bar tab to “Selected objects”.
Clicking bars while holding down the Ctrl key will display multiple connection lines. You can also display connection lines for the range selected using a rubber band.
Clicking the mouse on other part of the chart will remove the connection lines.