diff --git a/lib/er_email/engine.rb b/lib/er_email/engine.rb
index 02050ef..eec069e 100644
--- a/lib/er_email/engine.rb
+++ b/lib/er_email/engine.rb
@@ -10,7 +10,7 @@ module ErEmail
 
         side_bar do
           head_label_i18n 'er_email.er_email', icon_class: "icons-paperplane"
-          available_for [:admin,:manager,:sub_manager]
+          available_for "sub_managers"
           active_for_controllers (['admin/er_emails'])
           head_link_path "admin_er_emails_path"
 
@@ -18,19 +18,19 @@ module ErEmail
                                 :link_path=>"admin_er_emails_path" ,
                                 :priority=>1,
                                 :active_for_action=>{'admin/er_emails'=>'index'},
-                                :available_for => [:all]
+                                :available_for => 'sub_managers'
           context_link 'new_', 
                                 :link_path=>"new_admin_er_email_path" ,
                                 :priority=>2,
                                 :active_for_action=>{'admin/er_emails'=>'new'},
-                                :available_for => [:sub_manager]
+                                :available_for => 'sub_managers'
           context_link 'categories',
                                 :link_path=>"admin_module_app_categories_path" ,
                                 :link_arg=>"{:module_app_id=>ModuleApp.find_by(:key=>'er_email').id}",
                                 :priority=>3,
                                 :active_for_action=>{'admin/er_emails'=>'categories'},
                                 :active_for_category => 'ErEmail',
-                                :available_for => [:manager]
+                                :available_for => 'managers'
         end
 
       end