Hi Jorg, As of today you cannot create subcategories in the BulletinBoard application. I coded the application as a proof of concept a couple months ago and didn't have the time to come back to it since. If you feel like it (that it, is you're ready to dig into XWiki's API, class & object model and velocity scripting) you can give a look at the code beneath the application's pages and try and do it yourself (this suggestion will only work if you're a coder / developer). Sorry for the negative answer, Guillaume On Fri, Dec 5, 2008 at 10:36 AM, Jörg Burkhardt <jbu(a)digitecture.de> wrote: -- Guillaume Lerouge Product Manager - XWiki Skype ID : wikibc http://blog.xwiki.com/