orbit-basic/vendor/built_in_modules/calendar/config/routes.rb

Rails.application.routes.draw do
	namespace :panel do
	  namespace :orbitcalendar do
	      namespace :back_end do 

	      	match '/calendar(/:year(/:month))' => 'calendar#index', :as => :calendar, :constraints => {:year => /\d{4}/, :month => /\d{1,2}/}
	      	resources :calendar_categories

	      end
	  end
	end

end