How do I create or install an extended layout override?
As discussed in What is an extended template override? How do they work?, extended layout overrides (formerly known as sub-templates) allow you to override the layout of your template without needing to edit the main index.php file. We've included a sample extended layout override in the template installation zip. To install it, open the installation zip and extract that file from JE-Construct-xxx-1.x.x.zip/layouts/index.php to /templates/je-construct-xxx/layouts/
If you are using Construct Pro, you can create extended layout overrides for articles, items, sections (if using 1.5), categories, and components by placing the appropriately named template override in the appropriate folder.
For example, an extended layout override for article #6 would be named article-6.php and placed in the /templates/je-construct-xxx/layouts/article directory.