{{-- Level 1 --}}
{!! html()->label('Level 1 (Site)', 'master_site_id')->toHtml() !!}
{!! html()->select('master_site_id[]', $masterSites->toArray() ?? [], old('master_site_id', $master_site_id ?? ''))->class('form-control')->attribute('multiple')->id('master_site_id') !!}
{{-- Level 2 --}}
{!! html()->label('Level 2 (Business Site)', 'business_site') !!}
{!! html()->select('business_site[]', ($businessSites ?? collect())->toArray(), old('business_site', $business_site ?? ''))->id('businessSite')->attribute('multiple')->class('form-control')->attribute('data-selected', old('business_site', $business_site ?? '')) !!}
{{-- Level 3 --}}
{!! html()->label('Level 3 (Unit)', 'business_unit') !!}
{!! html()->select('business_unit[]', ($businessUnits ?? collect())->toArray(), old('business_unit', $business_unit ?? ''))->id('businessUnit')->attribute('multiple')->class('form-control')->attribute('data-selected', old('business_unit', $business_unit ?? '')) !!}
{{-- Level 4 --}}
{!! html()->label('Level 4 (Sub Unit)', 'level4') !!}
{!! html()->select('level4[]', ($businessSubUnits ?? collect())->toArray(), old('level4', $level4 ?? ''))->id('business_sub_unit')->attribute('multiple')->class('form-control')->attribute('data-selected', old('level4', $level4 ?? '')) !!}