Change an activity's duration in the Gantt Chart

1. Move your mouse over the right end of an activity’s Gantt Chart bar until it displays a double-ended arrow.
2. Click and hold the mouse button.
   
   To increase the duration of the activity, drag the bar to the right.
   
   To decrease the duration of the activity, drag the bar to the left.

Notes

• If resources are assigned to the activity, the activity’s labor/ nonlabor units or the activity's resource assignment units per time are adjusted when you change the activity’s duration in accordance with the activity’s duration type.
• If resources are assigned to the activity, and the resource assignment has manual future period values, the values may be affected when you change the activity duration.