To add a cube/carousel to the right. Go to the member area and click "Homepage Settings". In the Right Sections (Sidebar), select Extra homepage photo with the appropriate flash.
If you want only certain photo galleries to appear, click "Change homepage photos". In the Extra photo area, select to show random photos from the selected photo galleries. Click the "Select galleries" and check the galleries that you want to in the extra homepage section.
Printable Version
How do I get some pictures on the right side? - 
