1. Agar Resgister Laravel UI disable 

Tambahakan code pada rputes/web.php

Auth::routes(['register' => false]);

2. Ubah Direct after Login

Seeting pada file app/provides/RouteServiceProvide.php Rubah baris 

public const PANEL = '/panel/home';

Selanjutnya rubah XXX yang ada pada path app/Http/Auth/LoginController.php menjadi cons variable yg sudah di buat.

protected $redirectTo = RouteServiceProvider::XXX;

public function handle(Request $request, Closure $next, ...$guards)
    {
        $guards = empty($guards) ? [null] : $guards;

        foreach ($guards as $guard) {
            if (Auth::guard($guard)->check()) {
                return redirect(RouteServiceProvider::PANEL);
            }
        }

        return $next($request);
    }