Lillian, just click on an image, then zoom in enough so that the yellow-blue Transition box/icon appears (called Fades) near the left edge of the image. Click it and you'll get access to all sorts of fades as well as how to apply them to later or all the objects. I'm not sure about VPX, but in Magix Movie Studio you need to have you objects on track 1 to apply the "following" and other options.