How to customize which field is displayed on Attach dropdown

Hi guys.

I create a relation manager named SubscriptionsRelationManager. That relationship is between DepartmentSchedule and Subscription. It works great but, when the attach form appear it showing the subscription.id but I want to show subscription.user.name . How can I do that?

Screenshot of the attach form: https://share.cleanshot.com/6pPTtcKW

The relation manager

<?php

namespace App\Filament\Resources\DepartmentScheduleResource\RelationManagers;

use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\RelationManagers\RelationManager;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletingScope;

class SubscriptionsRelationManager extends RelationManager
{
    protected static string $relationship = 'subscriptions';

    public function form(Form $form): Form
    {
        return $form
            ->schema([
                Forms\Components\TextInput::make('id')
                    ->placeholder('ID asdf')
                    ->required()
                    ->maxLength(255),
            ]);
    }

    public function table(Table $table): Table
    {
        return $table
            ->recordTitleAttribute('id')
            ->columns([
                Tables\Columns\TextColumn::make('id'),
            ])
            ->filters([
                Tables\Filters\TrashedFilter::make()
            ])
            ->headerActions([
                Tables\Actions\CreateAction::make(),
                Tables\Actions\AttachAction::make()
                    ->preloadRecordSelect()
                    ->using(function (array $data, Model $record) {
                        $this->getOwnerRecord()->subscriptions()->attach($record, [
                            'created_by_id' => auth()->id(),
                        ]);
                    }),
            ])
            ->actions([
                Tables\Actions\EditAction::make(),
                Tables\Actions\DetachAction::make(),
                Tables\Actions\DeleteAction::make(),
                Tables\Actions\ForceDeleteAction::make(),
                Tables\Actions\RestoreAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DetachBulkAction::make(),
                    Tables\Actions\DeleteBulkAction::make(),
                    Tables\Actions\RestoreBulkAction::make(),
                    Tables\Actions\ForceDeleteBulkAction::make(),
                ]),
            ])
            ->modifyQueryUsing(fn (Builder $query) => $query->withoutGlobalScopes([
                SoftDeletingScope::class,
            ]));
    }
}

Subscription Model

<?php

namespace App\Models;

use App\Traits\Models\HasLoginManagement;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Subscription extends Model
{
    use HasFactory;
    use SoftDeletes;

    protected $fillable = [
        'subscription_status_id',
        'event_package_id',
        'user_id',
    ];

    public function eventPackage()
    {
        return $this->belongsTo(EventPackage::class);
    }

    public function subscriptionStatus()
    {
        return $this->belongsTo(SubscriptionStatus::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function departmentSchedules()
    {
        return $this->belongsToMany(
            DepartmentSchedule::class,
            'department_schedule_subscriptions',
            'subscription_id',
            'department_schedule_id'
        )->withPivot('created_by_id', 'updated_by_id', 'user')
                ->withTimestamps();
    }
}

DepartmentSchedule

<?php

namespace App\Models;

use App\Traits\Models\HasLoginManagement;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class DepartmentSchedule extends Model
{
    use HasFactory;
    use SoftDeletes;
    use HasLoginManagement;

    protected $fillable = [
        'department_id',
        'name',
        'schedule_date',
        'start_time',
        'end_time',
        'repeat',
        'repeat_until',
        'capacity',
        'created_by_id',
        'updated_by_id',
    ];

    public function department()
    {
        return $this->belongsTo(Department::class);
    }

    public function createdBy()
    {
        return $this->belongsTo(User::class, 'created_by_id');
    }

    public function updatedBy()
    {
        return $this->belongsTo(User::class, 'updated_by_id');
    }

    public function subscriptions()
    {
        return $this->belongsToMany(
            Subscription::class,
            'department_schedule_subscriptions',
            'department_schedule_id',
            'subscription_id'
        )->withPivot('created_by_id', 'updated_by_id')
            ->withTimestamps();
    }
}