Forgive me if I'm wrong but he seems to be asking, how to make those folders. In your XMB, highlight for example your Backup Manager and press Triangle. Then go to Album and choose the Name you want like 'Homebrew' Then press X. Now press Square and you should see the folders you were looking for.
You could be right there too. I only just remembered this one last night (Surprisingly while on the PS3 ) so it's highly likely I was wrong above. You can also use the Square button to switch between views (Basically folders or no folders).