Overriding K2 sub-templates in assigned site templates
Details
K2 sub-templates extend the templating capabilities of Joomla! by allowing the creation of multiple, named sets of view overrides for K2 (the component) and certain K2 modules.
Any K2 component sub-template can be assigned to a K2 component category or K2 component menu item, and any K2 module sub-template is assignable to a module instances that support sub-templates (i.e. K2 Content module).