Get WordPress to use another custom “author.php” file (“custom-author-file.php”)
In author.php: <?php get_template_part(‘custom-author-file’); Alternatively, rename your custom-author-file.php to author.php. The URL being used in this case isn’t relevant, as a template doesn’t determine the URL used, it’s the other way around. However, I suspect there is more to your question you haven’t explained