Asta Powerproject - Moving tasks on the bar chart

Move the mouse pointer over the task on bar 4 so that the cursor changes to .
Press and hold down the left mouse button, then drag the cursor to the right. As you drag, a popup box displays the start date, finish date and duration of the task you are moving.
Release the mouse button when the task is positioned two days later.
Click away from the task to deselect it.

You can also use the Object Edit toolbar and the properties view to move tasks by changing their start and finish dates.