Inserting images as background

You can add images as a background to say cut the shape out from the image

First you need to create or select an object that the boundaries will be considered as image dimensions, then you tap Insert menu > BG img and you select desired image (long tap on image file to see the preview)

After opening the image you can delete the selected object if you want, you can scale and move the background image and place as many as you want, each projection side has it's own set of background images.