nshop/app/Providers/HorizonServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\Facades\Gate;
use Laravel\Horizon\Horizon;
use Laravel\Horizon\HorizonApplicationServiceProvider;

class HorizonServiceProvider extends HorizonApplicationServiceProvider
{
    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        parent::boot();

        // Horizon::routeSmsNotificationsTo('15556667777');
        // Horizon::routeMailNotificationsTo('example@example.com');
        // Horizon::routeSlackNotificationsTo('slack-webhook-url', '#channel');
    }

    /**
     * Authorize Horizon with the admin guard.
     *
     * The default guard is customer, so the framework callback would inspect
     * the storefront user. Dashboard access follows the admin session instead.
     */
    protected function authorization(): void
    {
        $this->gate();

        Horizon::auth(function ($request) {
            return Gate::forUser($request->user('admin'))->check('viewHorizon')
                || app()->environment('local');
        });
    }

    /**
     * Register the Horizon gate.
     *
     * This gate determines who can access Horizon in non-local environments.
     */
    protected function gate(): void
    {
        Gate::define('viewHorizon', function ($user = null) {
            return in_array(optional($user)->email, [
                'admin@longyi.com',
            ]);
        });
    }
}