How to move a bar on the order Gantt chart Published: 10/27/2008Updated: 03/30/2017Author: shuCategory: Order gantt chartTags: You can move a bar on the order Gantt chart according to the following steps. Steps: 1.On the order Gantt chart, click [+] to the left of an order code to display operations at a lower level. 2.At that level, you can move an operation manually.