diff --git a/app/views/admin/seminar_signups/edit.html.erb b/app/views/admin/seminar_signups/edit.html.erb
index 75a9555..813f3a3 100644
--- a/app/views/admin/seminar_signups/edit.html.erb
+++ b/app/views/admin/seminar_signups/edit.html.erb
@@ -100,6 +100,13 @@
                 <div class="controls">
                   <%= f.email_field :email, :class=>"input-block-level", :placeholder=> signup_field.placeholder[I18n.locale], :required => true %>
                 </div>
+                <div class="controls">       
+                  <label class="radio-inline">
+                    <%= f.check_box :is_confirmed, :checked => (@seminar_signup.is_confirmed)%>
+                    <%= f.hidden_field :is_confirmed_date %>
+                    <%= t('seminar_signup.is_confirmed') %>
+                  </label>
+                </div>
                 <br />
                 <div class="controls">
                   <label for="send_email" class="control-label muted"><%= t("seminar_signup.send_email") %></label>
@@ -321,4 +328,14 @@ $("#seminar_signup_signup_confirmed").on("change",function () {
   }
 })
 
+$("#seminar_signup_is_confirmed").on("change",function () {
+  if(this.checked){
+    dt = new Date();
+    format = dt.getFullYear() + "/" + dt.getMonth() + "/" + dt.getDate() + " " + dt.getHours() + ":" + dt.getMinutes();
+    $("#seminar_signup_is_confirmed_date").val(format);
+  }else{
+    $("#seminar_signup_is_confirmed_date").val("");
+  }
+})
+
 </script>
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