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I cant see the module like on your screenshoot, where can I find it? it should on jomsocial home page right? but I cant find, seems you change the module configuration and already find the solution?
no I do nothing - on front page - left sidebar - Location ( i renamed Group to Location ) - click on group " jobcaster " or "nestor" - then the Location site ( group ) be visit.
Ok, please you download this file
www.dropbox.com/s/rj7in5ytitlkxji/single.php.zip?dl=0
and copy to your override folder /templates/YOURTEMPALTE/html/com_community/layouts/groups/ or you copy to this folder /components/com_community/templates/jomsocial/layouts/groups/