Edit All Pages Template
From Smart Job Board help
“All Pages Template” term means all pages of the front-end except the homepage.
Front-end pages template is called “index.tpl”. All site pages have some common components, such as: header and footer, logo, top menu, page title, etc.
Making changes for such common components like mentioned above involves editing the “all pages template” or index.tpl.
All changes you make to this template will be applied to all site pages except the homepage.
“Edit all pages Template” link redirects you to the Templates > Edit Templates > Main > edit index.tpl page of the Admin Panel.
Note: More information about this page of the Admin Panel you can find in the Edit Templates section of the Manual.