Chunk25:Help screen column header Subcategory Levels From Joomla! Documentation Revision as of 00:04, 16 April 2012 by Dextercowley (talk | contribs) (2.5 chunk)(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff) Subcategory Levels. (Use Global/All/1-5) The number of levels of subcategories to show in the layout. Select All to show all levels in the subcategory hierarchy.