Some actions in admin prefix some in /

routes.php

Router::scope('/', function ($routes) {
    $routes->plugin(
        'IncUsers',
        ['path' => '/'],
        function (RouteBuilder $routes) {
            $routes->connect('/login/', ['controller' => 'Users', 'action' => 'login']);
            $routes->connect('/register/', ['controller' => 'Users', 'action' => 'add']);
            $routes->fallbacks('DashedRoute');
        });
});

Router::prefix('admin', function ($routes) {
    $routes->plugin(
        'IncUsers',
        ['path' => '/users'],
        function (RouteBuilder $routes) {
            $routes->connect('/', ['controller' => 'Users', 'action' => 'index']);
            $routes->connect('/logout/', ['controller' => 'Users', 'action' => 'logout']);
            $routes->connect('/profile/:id', ['controller' => 'Users', 'action' => 'view'],
                ['id' => '\d+', 'pass' => ['id']]);
            $routes->fallbacks('DashedRoute');
        }
    );
})