ember.js render partial on any template

I need to pick up an ember.js project to finish a few things. Unfortunately I don't have time to learn the whole framework and features but I was wondering how I create a partial.

I read the documentation below but don't really understand what goes where. I presume the second block of text goes in the .hbs template but where do I put the top block so that the second block can be rendered on any .hbs template?

   <script type="text/x-handlebars" data-template-name='_author'>
      Written by {{author.firstName}} {{author.lastName}}
    </script>

    <script type="text/x-handlebars" data-template-name='post'>
      <h1>{{title}}</h1>
      <div>{{body}}</div>
      {{partial "author"}}
    </script>

Thanks in advanced.