diff --git a/src/OpenTok/OpenTok.php b/src/OpenTok/OpenTok.php
index b21ebc8..0fe0956 100644
--- a/src/OpenTok/OpenTok.php
+++ b/src/OpenTok/OpenTok.php
@@ -502,6 +502,14 @@ public function startArchive(string $sessionId, $options = []): Archive
             'resolution' => null,
             'streamMode' => StreamMode::AUTO,
         );
+        if (isset($options['multiArchiveTag'])) {
+            $defaults['multiArchiveTag'] = $options['multiArchiveTag'];
+            Validators::validateArchiveMultiArchiveTag($defaults['multiArchiveTag']);
+        }
+        if (isset($options['layout'])) {
+            $defaults['layout'] = $options['layout'];
+            Validators::validateArchiveLayout($defaults['layout']);
+        }
         $options = array_merge($defaults, array_intersect_key($options, $defaults));
         list($name, $hasVideo, $hasAudio, $outputMode, $resolution, $streamMode) = array_values($options);
 
diff --git a/src/OpenTok/Util/Validators.php b/src/OpenTok/Util/Validators.php
index 6607b45..0c104cf 100755
--- a/src/OpenTok/Util/Validators.php
+++ b/src/OpenTok/Util/Validators.php
@@ -204,6 +204,22 @@ public static function validateArchiveId($archiveId)
             );
         }
     }
+    public static function validateArchiveMultiArchiveTag($multiArchiveTag)
+    {
+        if ($multiArchiveTag != null && !is_string($multiArchiveTag) /* TODO: length? */) {
+            throw new InvalidArgumentException(
+                'The multiArchiveTag was not a string: ' . print_r($multiArchiveTag, true)
+            );
+        }
+    }
+    public static function validateArchiveLayout($layout)
+    {
+        if ($layout != null && !is_array($layout)) {
+            throw new InvalidArgumentException(
+                'The layout was not an array: ' . print_r($layout, true)
+            );
+        }
+    }
     public static function validateArchiveData($archiveData)
     {
         if (!self::$archiveSchemaUri) {