Install via composer:

$ composer require hummer2k/conlayout:~4.0

Enable module in your application.config.php

<?php
$config = [
    'modules' => [
        'ConLayout', // <--
        'Application',
        '...'
    ]
];

Copy vendor/hummer2k/conlayout/config/con-layout.global.php.dist to config/autoload/con-layout.global.php