jandl-taskmanager-app/be/database/seeders/MasterTaskSeeder.php

<?php

namespace Database\Seeders;

use App\Models\MasterTask;
use Illuminate\Database\Console\Seeds\WithoutModelEvents;
use Illuminate\Database\Seeder;

class MasterTaskSeeder extends Seeder
{
    /**
     * Run the database seeds.
     *
     * @return void
     */
    public function run()
    {
        MasterTask::factory()
                  ->hasAttachments(2)
                  ->hasSubTasks(2)
                  ->create();
    }
}