diff --git a/module/task/control.php b/module/task/control.php
index aeea86d919..3a9ce174a0 100755
--- a/module/task/control.php
+++ b/module/task/control.php
@@ -514,12 +514,18 @@ class task extends control
      * @access public
      * @return void
      */
-    public function deleteWorkhour($estimateID)
+    public function deleteWorkhour($estimateID, $confirm = 'no')
     {
         $estimate = $this->task->getEffortByID($estimateID);
         $taskID   = $estimate->objectID;
         $task     = $this->task->getById($taskID);
 
+        if($confirm == 'no' and $task->consumed - $estimate->consumed == 0)
+        {
+            $formUrl = $this->createLink('task', 'deleteWorkhour', "estimateID=$estimateID&confirm=yes");
+            return $this->send(array('result' => 'fail', 'callback' => "zui.Modal.confirm({$this->lang->task->confirmDeleteLastEstimate}).then((res) => {if(res) $.ajaxSubmit({url: $formUrl})});"));
+        }
+
         $changes = $this->task->deleteWorkhour($estimateID);
         if(dao::isError()) return print(js::error(dao::getError()));
 
diff --git a/module/task/css/create.ui.css b/module/task/css/create.ui.css
index 8e4cc67166..722aa4b3d0 100644
--- a/module/task/css/create.ui.css
+++ b/module/task/css/create.ui.css
@@ -20,3 +20,9 @@
 .assignedToList .label, .assignedToList .icon{margin-right: 5px; margin-bottom: 5px}
 
 :root {--modal-base: 45rem;}
+
+.line-arrow {display: inline-block; transform: scaleY(6); font-size: 20px; position: relative; right: 20px; color:#2e7fff;}
+.team-index {overflow: hidden} 
+#teamTable tr:nth-last-child(-n+2) .team-index{overflow:visible; }
+#teamTable tr:nth-child(2) .line-arrow{transform: scaleY(4); top: 20px}
+#teamTable tr:nth-last-child(-n+2) .line-arrow{bottom:12px; transform: scaleY(2)}
diff --git a/module/task/ui/create.html.php b/module/task/ui/create.html.php
index 2d9f1c1653..353cd0f0af 100644
--- a/module/task/ui/create.html.php
+++ b/module/task/ui/create.html.php
@@ -133,6 +133,11 @@ for($i = 1; $i <= 3; $i ++)
         (
             setClass('team-index'),
             span
+            (
+                setClass("line-arrow"),
+                '↓'
+            ) ,
+            span 
             (
                 setClass("team-number"),
                 $i