The app lets you create up to 5 groups of related files on your desktop. You can freely move groups of files around on your desktop and add or remove files via drag & drop.
Each group has a title so that you can organize your files any way you like. For example, you could create separate groups for each project you are working on, or add separate groups for photos and text documents. If you frequently take screenshots, that would be another good fit for a group. The possibilities are endless.