Yes you can. Load the Ball Hi-Res. Now go to the Material room and use what settings you want to make your material, then open your library and go to Materials-Materials and you will see all your different folders for materials. Now above all your folders you will see Materials in dark letters, click on that and at the bottom you will see (Add New Category) select that and create a new folder for your personal Materials. Now enter that folder and click the plus sign at the bottom and give your new material a name, it will then add it.