allo/app/StaffOld.php

<?php

namespace App;

use Illuminate\Notifications\Notifiable;
use Jenssegers\Mongodb\Auth\User as Authenticatable;

class StaffOld extends Authenticatable 
{
    //
    use Notifiable;
    
    protected $connection = 'mongodb2';
    protected $collection = 'staff';

    protected $guarded = ['_id'];
    
    protected $hidden = [
        'password', 'remember_token',
    ];
}