Update delivery process fields and sample form

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

@@ -36,6 +36,19 @@ class Wiaas_Field_Order_Document extends GF_Field_FileUpload {
 		return esc_attr__( 'Order Document', 'wiaas' );
 	}
 
+	public function add_button( $field_groups ) {
+		$field_groups = Wiaas_Order_Fields::maybe_add_order_field_group($field_groups);
+
+		return parent::add_button( $field_groups );
+	}
+
+	public function get_form_editor_button() {
+		return array(
+			'group' => 'wiaas_order_fields',
+			'text'  => $this->get_form_editor_field_title(),
+		);
+	}
+
 	public function get_download_url( $file, $force_download = false ) {
 
 		$upload_root = GFFormsModel::get_upload_url( $this->formId );