With the Gantt Chart in your project file now full of tasks, it’s time to put these tasks in a logical order. It’s also time to add any forgotten tasks or delete duplicated ones.
To move a task from one row to another, follow these steps:
In the table portion of the Gantt Chart, select the entire task row by clicking the gray row heading, which includes the task number.
With your mouse pointer still over the row heading (the pointer should appear as a black crosshair), drag the task to the location in the Gantt Chart where you want to place it.
A gray line along the row border follows your mouse movements, indicating where the task will be inserted when you release the mouse button.
Release the mouse button ...