Hello. You need to look at: * the query module: http://extensions.xwiki.org/xwiki/bin/view/Extension/Query+Module * the bootstrap's documentation about dropdowns: http://getbootstrap.com/javascript/#dropdowns * the HTML macro: http://extensions.xwiki.org/xwiki/bin/view/Extension/HTML+Macro * the children viewer to look at the used query: https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-core/xwi… 2016-01-14 10:40 GMT+01:00 Giordano Ninonà <giordano.ninona(a)gmail.com>om>: -- Guillaume Delhumeau (gdelhumeau(a)xwiki.com) Research & Development Engineer at XWiki SAS Committer on the XWiki.org project