When you created your template and like to use it now with your current offer you can create a slide out of it.
Simply put your template in your playlist by drag and drop. A window will show up where you can edit your template. Choose a picture or/and change text of your placeholders. After saving your changes your template has become content and is added to your playlist. Of course you can do this with the same template again and again for every new content.
Don't forget to save your playlist.