To add a new template to your childtheme, please follow these steps:
♣ Step 1: Paste a page template file located in the parent theme into the childtheme.
Notice that the directory of this file in both parent and childtheme must be similar.
For example, you want to modify Full-Width Template in Jobmonster childtheme. See this image, the directory of page-full-with file is this one in parent theme:
So now you will paste this file into the childtheme. You have to assure that the directory to that file in childtheme is the same directory in parent theme. You can figure out that:
♣ Step 2: Modify name of the file
You can give another name to the file in childtheme. You can call it, for instance, page-full-width-child. After that, you will open this file and change Full Width to Full Width Child in the line of Template Name:
For example, your original Full-Width template has both header and footer; however, now you want to eliminate these two sections from your template. You can follow these instructions:
To remove header, you will replace get_header(); with wp_head();
To remove footer, similarly, you will replace get_footer(); with wp_footer();