Putting the shots in Order:

Click on the "EYE" symbol:

It is one of two choices.
The eye symbol represents the pictures.
The clock symbol shows a timeline of audio and visual.

Hold down the cursor and drag the sequence onto the "eye" line.

Build up your advertisement by adding cropped sequences in the order you have planned.

If you wish to remove a shot, click, hold down and drag it back to the shelf.

If you wish to change the position of a shot, click, hold down and drag it to the new position.