diff --git a/config/routes.rb b/config/routes.rb
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -35,8 +35,13 @@
     member do
       post 'add_user', to: 'groups#add_user', as: 'add_user'
       delete 'remove_user/:user_id', to: 'groups#remove_user', as: 'remove_user'
+      delete 'remove_all_user', to: 'groups#remove_all_user', as: 'remove_all_user'
       post 'add_problem', to: 'groups#add_problem', as: 'add_problem'
       delete 'remove_problem/:problem_id', to: 'groups#remove_problem', as: 'remove_problem'
+      delete 'remove_all_problem', to: 'groups#remove_all_problem', as: 'remove_all_problem'
+    end
+    collection do
+
     end
   end