[Dead Eddie]

Create a new plugin that hooks into vbcms_collection_section_querydata and add the following code:

PHP Code:

//comma separated list of nodeids to apply this to
$sections = array(1,5);

if(self::QUERY_BASIC == $required_query && in_array($this->filter_node_exact, $sections))
{
$this->sortby = ' ORDER BY RAND()';
} 


Edit the section(s) you want to apply it to at the top, and you're good to go.