render templates

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

router.js

import Ember from 'ember';
import config from './config/environment';

const Router = Ember.Router.extend({
  location: 'none',
  rootURL: config.rootURL
});

Router.map(function() {
  this.route('show1', { path: '/show1' });
  this.route('show2', { path: '/show2' });
});

export default Router;

routes.show1.js

import Ember from 'ember';

export default Ember.Route.extend({
  renderTemplate: function(controller, model){
    this.render('newLayout', {
     into: 'application',
     outlet: 'main'
     });
    this.render('show1', {
     into: 'newLayout',
     outlet: 'main'
     });
  }
});

routes.show2.js

import Ember from 'ember';

export default Ember.Route.extend({
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

templates.new-layout.hbs

New Layout template,, not application
{{outlet}}

templates.show1.hbs

<h1> show 1</h1>

templates.show2.hbs

<h1> show 2</h1>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}