Update delivery process fields and sample form

backend/app/plugins/wiaas/includes/delivery-process/class-wiaas-order-fields.php

@@ -13,6 +13,29 @@ class Wiaas_Order_Fields {
 		add_filter('gform_fileupload_entry_value_file_path', array( __CLASS__, 'display_order_document_fields' ), 999, 2);
 	}
 
+	/**
+	 * Adds the Order Fields group to the form editor.
+	 *
+	 * @param array $field_groups The properties for the field groups.
+	 *
+	 * @return array
+	 */
+	public static function maybe_add_order_field_group( $field_groups ) {
+		foreach ( $field_groups as $field_group ) {
+			if ( $field_group['name'] == 'wiaas_order_fields' ) {
+				return $field_groups;
+			}
+		}
+
+		$field_groups[] = array(
+			'name'   => 'wiaas_order_fields',
+			'label'  => __( 'Order Fields', 'wiaas' ),
+			'fields' => array()
+		);
+
+		return $field_groups;
+	}
+
 
 	public static function display_order_document_fields($file_path, $field) {