Relationship Manager - Custom Title Attributes?

                Tables\Actions\AttachAction::make()
                    ->form(fn (AttachAction $action): array => [
                    Forms\Components\Select::make('recordId')
                        ->preload()
                        ->options(fn() => \App\Models\MyModel::query()
                            ->get()
                            ->mapWithKeys(fn($item) => [$item->id => $item->title . ' - ' . $item->part])
                            ->toArray()
                        )
                ]),