To navigate to the Template Library select the “Templates” drop down under the Email menu. Here you can find any email designs that have been saved as templates. You can search for these templates or order them in Ascending or Descending order by Last Updated or Created Date.
To use a template hover over the template you want to use and choose from “Use this Template” or “Preview”. Selecting preview will take you into a detailed preview mode for the selected template.
Clicking into “Use this Template” will take you into Design Editor where you can edit this template or use the selected template for a send. To make changes and save your changes as a template use the “Actions” menu in the upper left hand corner and select “Save as Template”.