You can use sets to organize and display your picture sources—this is useful when you want to preview your pictures in sequence.
To make a picture 'gallery':
Create a new set from selected pictures
Re-order items in the set
Preview the set as thumbnails
In Navigation View, click the folder containing the pictures you want to include.
In List View, select the required pictures. Hold down the CTRL key and click to select multiple pictures or SHIFT to select a range of pictures.
On the Project menu, click the Create As option.
Click the Create As Set option.
Name and describe the new set.
In Navigation View, click Sets.
Click on the new set. The pictures are displayed in List View.
On the View toolbar, click the Sort by Custom button. The Move Up and Move Down buttons are enabled.
In List View, select the required picture and use the Move Up and Move Down buttons to move it to the required position.
Click in the List View for the set.
On the View menu, click List View.
Click the required thumbnail option.