$this->setGroupedFields(array(
       "General"    => array("_propertyselection", "property_type_id", "name", "price", "number_of_bedrooms", "key_features", "description","thumbnail"),
       "Floorplan 1" => array("floorplan1", "floorplan1_text"),
       "Floorplan 2" => array("floorplan2", "floorplan2_text"),
       "Floorplan 3" => array("floorplan3", "floorplan3_text"),
       "Floorplan 4" => array("floorplan4", "floorplan4_text"),
       "Floorplan 5" => array("floorplan5", "floorplan5_text"),
       "Floorplan 6" => array("floorplan6", "floorplan6_text"),
       "Slideshow 1" => array("slideshow1"),
       "Slideshow 2" => array("slideshow2"),
       "Slideshow 3" => array("slideshow3"),
       "Slideshow 4" => array("slideshow4"),
       "Slideshow 5" => array("slideshow5"),
    ));