Using this software you can only crop a photo. There is no other option available to modify the size of the image. To use the crop option, you can open the software, select the photo that you want to modify, and press the edit button from the bottom of the page that looks like a painting brush. A new window will be opened and you can find all the available editing option on the left side, as well as the crop one. Select it and press next to explore the available options.