To use a default HR email existing HR Template, go to the Templates tab in the Admin panel.
This will lead you to the Templates & Forms page. Click the Email Template tab located underneath the “Templates & Forms” header.
You can find the templates under the System Templates.
You are able to Preview, Edit, or Clone a template by clicking on one of the three buttons under the Actions section. 
To preview a Template, click on the eye button.
To edit a Template, click on the pencil button.
To clone a Template, click on the page button.
The Template is automatically populated in the Email Template drop down section when communicating with a Candidate. (See Communicating With Candidates.)