The program allows you to create 3D pictures using one source image as well as two source images.
In order to create a 3D image out of one picture, just check "Use single image" box. For creating 3D out of two images, take two shots of a still set object captured with a small horizontal shift (usually the distance must be about 2-3 inches to have the right scene).
In both cases the images are inserted into the program and next second a 3D image is created in the location which you define...