suggested changes that includes:

moving actions for custom domain in its own controller
use separate service class for custom domains
updated help text for custom domains
increased test coverage for custom domains

spec/controllers/admin/conferences_controller_spec.rb

@@ -135,15 +135,6 @@ describe Admin::ConferencesController do
         end
       end
     end
-
-    describe 'GET #custom_domain', blah: true do
-      it 'render custom domain' do
-        get :custom_domain, id: conference.short_title
-
-        expect(response).to render_template :custom_domain
-        expect(response).to be_success
-      end
-    end
   end
 
   shared_examples 'access as organization_admin' do