public function metaboxes()
{
$cmb = new_cmb2_box(array('id' => $this->id . '_metabox', 'title' => __("{$this->label} Options", 'scoutwp_plugin'), 'object_types' => array($this->id)));
$cmb->add_field(Metaboxes::date_time($this->id, 'start', array('required' => 'required')));
$cmb->add_field(Metaboxes::date_time($this->id, 'end', array('required' => 'required')));
$cmb->add_field(Metaboxes::price($this->id));
$cmb->add_field(Metaboxes::address($this->id, array('required' => 'required')));
$cmb->add_field(Metaboxes::postcode($this->id, array('required' => 'required')));
$cmb->add_field(Metaboxes::coordinates($this->id));
}