The Print & PDI sections of the Panel of Three Competition differ. The Print section requires three separate prints. The PDI section requires a montage of three pictures combined into a single image. The sizes and arrangement of the pictures are up to the photographer.
There are many methods for putting together a montage of images using different software packages. For a guide explaining how to create such an image. CLICK HERE.
Images use as part of a Panel of Three entry may also be entered in Internal Competitions.
The rules for the Panel of Three competition can be found here.