Create custom page template in Roots

First create a file inside wp-content/themes/roots with this convention page-filename.php. So in my case, I named it page-ajmalafif.php.

Inside the file, you can customize what to include in it, by default (taken from page-custom.php) it'll be;

Template Name: Ajmal Afif's

<?php get_template_part('templates/page', 'header'); ?>
<?php get_template_part('templates/content', 'page'); ?>

For the sake of simplicity, let's settle with that for now and we tweak it later.