You can add CMS dashboard items to an individual site's CMS by adding a DashboardWidget class to the site's widgets folder and a CustomDashboard class to the site's config folder.

[path_to_site]/dashboardwidgets/[name].dashboardwidget.class.php
[path_to_site]/config/customsidebarmenu.class.php

dashboardwidget

The dashboard class will be structured as follows

<php

class InvCustomDashboardWidgetExample extends InvDashboardWidget {

	protected $title = 'Example';
	protected $content = '';
	protected $footer = '';
	protected $priv = '';
	
	public function getContent(){
		// Generate and return your dashboard widget's HTML content here, for example...
		return '<p>this is an example widget</p>';
	}
	
	public function getFooter(){
		// Generate and return your dashboard widget's footer here, for example...
		if(!$this->footer){
			$this->footer = '<a class="btn btn-default" href="[URL]">Button</a>';
		}
		return $this->footer;
	}


}

?>

customsidebarmenu

The customsidebarmenu class will be structured as follows

<?php

Class CustomDashboard {

	public function updateDashboard($dashboard){
	
		$dashboard->addDashboardWidget('example' , InvDashboardWidget::getCustomWidget('example') , $after=null , $before='documents');
	
	}

}

?>