JhumanJ/OpnForm

class Workspace extends Model
{
    //
    public function users()
    {
        return $this->belongsToMany(User::class);
    }

    public function owners()
    {
        return $this->users()->wherePivot('role', 'admin');
    }
    //
}

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

return new class extends Migration
{
    public function up()
    {
        Schema::table('user_workspace', function (Blueprint $table) {
            $table->dropColumn('access_token');
            $table->dropColumn('is_owner');
            $table->string('role')->default('admin');
        });
    }
    //
}