The share menu includes various facilities for sharing the currently selected image with other MAGIX and third party services. So for example you can select a photo on your page and quickly send it to a MAGIX Online Album, to Facebook, or to Flickr. If you have other compatible MAGIX programs installed, you can also send the image to those. For example you can send to MAGIX Movie Edit Pro MX to include an image from Designer in a movie.
Please view the program help file for more information.