diff --git a/app/controllers/configurations_controller.rb b/app/controllers/configurations_controller.rb
--- a/app/controllers/configurations_controller.rb
+++ b/app/controllers/configurations_controller.rb
@@ -24,6 +24,16 @@
     end
   end
 
+  def set_exam_right
+    value = params[:value] || 'false'
+    GraderConfiguration.where(key: "right.bypass_agreement").update(value: value);
+    GraderConfiguration.where(key: "right.multiple_ip_login").update(value: value);
+    GraderConfiguration.where(key: "right.user_hall_of_fame").update(value: value);
+    GraderConfiguration.where(key: "right.user_view_submission ").update(value: value);
+    GraderConfiguration.where(key: "right.view_testcase ").update(value: value);
+    redirect_to :action => 'index'
+  end
+
 private
   def configuration_params
     params.require(:grader_configuration).permit(:key,:value_type,:value,:description)
diff --git a/app/views/configurations/index.html.haml b/app/views/configurations/index.html.haml
--- a/app/views/configurations/index.html.haml
+++ b/app/views/configurations/index.html.haml
@@ -1,37 +1,48 @@
 /- content_for :header do
 /  = javascript_include_tag 'local_jquery'
 
-%h1 System configuration
+.container-fluid
+  .row
+    .col-md-12
+      %h1 System configuration
+  .row
+    .col-md-12
+      = link_to 'Set exam mode', set_exam_right_grader_configuration_index_path('false'), class: 'btn btn-warning'
+      = link_to 'Set practice mode', set_exam_right_grader_configuration_index_path('true'), class: 'btn btn-info'
 
-- @group.each do |g|
-  %h2= g
-  %table.table.table-striped
-    %thead
-      %th{style: 'width: 25%'} Key
-      %th{style: 'width: 10%'}Type
-      %th{style: 'width: 15%'} Value
-      %th Description
-    - @configurations.each do |conf|
-      - next if conf.key[0...(conf.key.index('.'))] != g
-      - @grader_configuration = conf
-      %tr
-        %td
-          /= in_place_editor_field :grader_configuration, :key, {}, :rows=>1
-          = @grader_configuration.key
-        %td
-          /= in_place_editor_field :grader_configuration, :value_type, {}, :rows=>1
-          = @grader_configuration.value_type
-        %td
-          = best_in_place @grader_configuration, :value, ok_button: "ok", cancel_button: "cancel"
-        %td= conf.description
+  - @group.each do |g|
+    .row
+      .col-md-12
+        %h2= g
+        %table.table.table-striped
+          %thead
+            %th{style: 'width: 25%'} Key
+            %th{style: 'width: 10%'}Type
+            %th{style: 'width: 15%'} Value
+            %th Description
+          - @configurations.each do |conf|
+            - next if conf.key[0...(conf.key.index('.'))] != g
+            - @grader_configuration = conf
+            %tr
+              %td
+                /= in_place_editor_field :grader_configuration, :key, {}, :rows=>1
+                = @grader_configuration.key
+              %td
+                /= in_place_editor_field :grader_configuration, :value_type, {}, :rows=>1
+                = @grader_configuration.value_type
+              %td
+                = best_in_place @grader_configuration, :value, ok_button: "ok", cancel_button: "cancel"
+              %td= conf.description
 
-- if GraderConfiguration.config_cached?
-  %br/
-  Your config is saved, but it does not automatically take effect.
-  %br/
-  If you have one mongrel process running, you can
-  = link_to '[click]', :action => 'reload'
-  here to reload.
-  %br/
-  If you have more than one process running, you should restart 
-  them manually.
+  .row
+    .col-md-12
+      - if GraderConfiguration.config_cached?
+        %br/
+        Your config is saved, but it does not automatically take effect.
+        %br/
+        If you have one mongrel process running, you can
+        = link_to '[click]', :action => 'reload'
+        here to reload.
+        %br/
+        If you have more than one process running, you should restart 
+        them manually.
diff --git a/app/views/report/problem_hof.html.haml b/app/views/report/problem_hof.html.haml
--- a/app/views/report/problem_hof.html.haml
+++ b/app/views/report/problem_hof.html.haml
@@ -12,8 +12,8 @@
     .form-inline
       = select 'report',
         'problem_id',
-        @problems.collect {|p| ["[#{p.name}] #{p.full_name}", report_problem_hof_url(p.id)]},
-        {:selected => report_problem_hof_url(@problem)},
+        @problems.collect {|p| ["[#{p.name}] #{p.full_name}", problem_hof_report_path(p)]},
+        {:selected => problem_hof_report_path(@problem)},
         { class: 'select2 form-control' }
       %button.btn.btn-primary.btn-sm.go-button#problem_go{data: {source: "#report_problem_id"}} Go
 
diff --git a/config/routes.rb b/config/routes.rb
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -65,7 +65,11 @@
     end
   end
 
-  resources :grader_configuration, controller: 'configurations'
+  resources :grader_configuration, controller: 'configurations' do
+    collection do
+      get 'set_exam_right(/:value)', action: 'set_exam_right', as: 'set_exam_right'
+    end
+  end
 
   resources :users do
     member do
@@ -134,7 +138,7 @@
   resource :report, only: [], controller: 'report' do
     get 'login'
     get 'multiple_login'
-    get 'problem_hof/:id', action: 'problem_hof'
+    get 'problem_hof(/:id)', action: 'problem_hof', as: 'problem_hof'
     get 'current_score(/:group_id)', action: 'current_score', as: 'current_score'
     get 'max_score'
     post 'show_max_score'