diff --git a/config.json b/config.json
index ce1f35d..46eef0a 100644
--- a/config.json
+++ b/config.json
@@ -52,12 +52,15 @@
       "type": "selectbox",
       "required": true,
       "options": [
-        {"label": "Select an option", "value": "", "selected": false, "disabled": true},
+        {"label": "--Select all that apply--", "value": "", "selected": true, "disabled": true},
         {"label": "USA", "value": "USA"},
         {"label": "Canada", "value": "CAN"},
         {"label": "United Kingdom", "value": "UK"},
         {"label": "Australia", "value": "AUS"}
-      ]
+      ],
+      "custom": {
+        "multiple": true
+      }
     }
   ]
 }