diff --git a/public_html/assets/api/install.php b/public_html/assets/api/install.php
index fb7048a..a1e3972 100644
--- a/public_html/assets/api/install.php
+++ b/public_html/assets/api/install.php
@@ -748,9 +748,25 @@ trait InstallAPI {
             return intval($a['di_order_seq'] ?? 0) <=> intval($b['di_order_seq'] ?? 0);
         });
 
+        $has_existing = is_array($existing_rows) && count($existing_rows) > 0;
+        $has_trial    = is_array($trial_rows) && count($trial_rows) > 0;
+
+        $base_seq = 0;
+
+        if (!$has_existing && $has_trial) {
+            $qr_max = qry("
+                SELECT MAX(di_order_seq) AS max_seq
+                FROM tbl_daily_install
+                WHERE di_driver_uid = '{$di_driver_uid}'
+                AND di_install_date = '{$di_install_date}'
+            ");
+
+            $row_max = fetch_array($qr_max);
+            $base_seq = intval($row_max['max_seq'] ?? 0);
+        }
+
         $seq = 1;
         foreach($all as &$r){
-            // base_seq 더해줌
             $r['di_order_seq'] = $base_seq + $seq++;
         }
         unset($r);
diff --git a/public_html/doc/install_wait_list.php b/public_html/doc/install_wait_list.php
index f393fbd..ca33c4f 100644
--- a/public_html/doc/install_wait_list.php
+++ b/public_html/doc/install_wait_list.php
@@ -30,8 +30,10 @@ $total_count = $jdb->rQuery($sql_cnt, "Install wait list count error");
 // 1) Load waitlist
 // ============================
 $sql = "
-  SELECT *
-  FROM tbl_install_waitlist
+  SELECT iw.*, CONCAT(m.m_firstname, ' ', m.m_lastname) as iw_created_member
+  FROM tbl_install_waitlist iw
+  LEFT OUTER JOIN tbl_member m
+  ON iw.iw_created_by = m.m_uid
   WHERE iw_status in ('WAITING','DRAFT')
   $add_where
   ORDER BY iw_requested_due_date ASC, iw_request_at ASC
@@ -329,6 +331,44 @@ function formatPhone($phone) {
     modal.show();
   }
 
+  function openRoute() {
+
+    const OFFICE = "4490 Chesswood Dr, North York, ON M3J 2B9";
+
+    const rows = [];
+
+    document.querySelectorAll('#iwListBody tr').forEach(tr => {
+
+      const address = tr.dataset.address || '';
+      const city = tr.dataset.city || '';
+      const postal = tr.dataset.postal || '';
+
+      if (!address) return;
+
+      rows.push({
+        address: [address, city, postal].filter(Boolean).join(', '),
+        order: parseInt(tr.dataset.orderSeq || 0)
+      });
+    });
+
+    if (!rows.length) {
+      showPopupMessage('No route data.', 'error', 1500);
+      return;
+    }
+
+    // 순서 정렬 (중요)
+    rows.sort((a, b) => a.order - b.order);
+
+    const waypoints = rows.map(r => r.address).join('|');
+
+    let url = `https://www.google.com/maps/dir/?api=1`;
+    url += `&origin=${encodeURIComponent(OFFICE)}`;
+    url += `&destination=${encodeURIComponent(OFFICE)}`;
+    url += `&waypoints=${encodeURIComponent(waypoints)}`;
+
+    window.open(url, '_blank');
+  }
+
   function loadInstallWaitForEdit(iw_uid) {
     // 1) install_wait 메타 로드
     api('get_install_wait_detail', { iw_uid }, data => {
@@ -577,7 +617,8 @@ function formatPhone($phone) {
 
                     <!-- LEFT -->
                     <div class="d-flex gap-2 flex-wrap">
-                      <span class="badge <?=$workClass?>"><?=$work?></span>
+                      <span class="badge <?=$workClass?>"><?=$work?></span> 
+                      <small class="text-muted">created by <?=$row['iw_created_member']?></small>
 
                       <?php if ($row['iw_status'] === 'DRAFT'): ?>
                         <span class="badge bg-dark text-white">
@@ -857,6 +898,10 @@ function formatPhone($phone) {
 
                 <!-- Button -->
                 <div class="d-flex iw-ui-control align-items-center ms-auto gap-2">
+                  <button id="btnRouteSchedule" class="btn btn-outline-secondary">
+                    <i class="bi bi-geo-alt"></i> Route
+                  </button>
+
                   <button id="btnModifySchedule" class="btn btn-outline-primary" disabled>
                     <i class="bi bi-sliders"></i> Modify
                   </button>
@@ -1167,6 +1212,9 @@ function formatPhone($phone) {
 
     rows.forEach(r => {
       const tr = document.createElement('tr');
+      tr.dataset.address = r.di_address || '';
+      tr.dataset.city = r.di_city || '';
+      tr.dataset.postal = r.di_postal || '';
       if (r.is_trial) {
         tr.dataset.isTrial = '1';
         tr.dataset.iwUid   = r.iw_uid;   // waitlist uid
@@ -1866,6 +1914,14 @@ while ($row = mysqli_fetch_assoc($rmem)) {
       return;
     }
 
+    const routeBtn = e.target.closest('#btnRouteSchedule');
+    if (routeBtn) {
+      e.preventDefault();
+
+      openRoute();
+      return;
+    }
+
     // 3) WAIT CARD CLICK (trial toggle)
     const card = e.target.closest('.wait-card');
     if (!card) return;