diff --git a/app/Filament/Resources/CharacteristicApproverMasterResource.php b/app/Filament/Resources/CharacteristicApproverMasterResource.php
index bfb36c2..3677d3d 100644
--- a/app/Filament/Resources/CharacteristicApproverMasterResource.php
+++ b/app/Filament/Resources/CharacteristicApproverMasterResource.php
@@ -2,6 +2,7 @@
 
 namespace App\Filament\Resources;
 
+use App\Filament\Exports\CharacteristicApproverMasterExporter;
 use App\Filament\Resources\CharacteristicApproverMasterResource\Pages;
 use App\Models\CharacteristicApproverMaster;
 use App\Models\Machine;
@@ -11,6 +12,8 @@ use Filament\Forms\Components\Section;
 use Filament\Forms\Form;
 use Filament\Resources\Resource;
 use Filament\Tables;
+use Filament\Tables\Actions\ExportAction;
+use Filament\Tables\Actions\ImportAction;
 use Filament\Tables\Table;
 use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\SoftDeletingScope;
@@ -34,10 +37,13 @@ class CharacteristicApproverMasterResource extends Resource
                             ->columnSpan(2)
                             ->reactive()
                             ->relationship('plant', 'name')
+                            ->required()
+                            ->default(function () {
+                                return optional(CharacteristicApproverMaster::latest()->first())->plant_id;
+                            })
                             ->afterStateUpdated(function ($state, callable $set) {
                                 $set('updated_by', Filament::auth()->user()?->name);
-                            })
-                            ->required(),
+                            }),
                         Forms\Components\Select::make('machine_id')
                             ->label('Work Center')
                             ->columnSpan(2)
@@ -52,19 +58,28 @@ class CharacteristicApproverMasterResource extends Resource
 
                                 return Machine::where('plant_id', $plantId)->pluck('work_center', 'id');
                             })
+                            ->required()
+                            ->default(function () {
+                                return optional(CharacteristicApproverMaster::latest()->first())->machine_id ?? [];
+                            })
                             ->afterStateUpdated(function ($state, callable $set) {
                                 $set('updated_by', Filament::auth()->user()?->name);
-                            })
-                            ->required(),
+                            }),
                         Forms\Components\TextInput::make('characteristic_field')
-                            ->label('Characteristic Field')
+                            ->label('Master Characteristic Field')
                             ->columnSpan(2)
+                            ->required()
+                            ->default('NIL')
                             ->afterStateUpdated(function ($state, callable $set) {
                                 $set('updated_by', Filament::auth()->user()?->name);
                             }),
                         Forms\Components\TextInput::make('machine_name')
                             ->label('Machine')
                             ->columnSpan(2)
+                            ->required()
+                            ->default(function () {
+                                return optional(CharacteristicApproverMaster::latest()->first())->machine_name ?? '';
+                            })
                             ->afterStateUpdated(function ($state, callable $set) {
                                 $set('updated_by', Filament::auth()->user()?->name);
                             }),
@@ -173,7 +188,7 @@ class CharacteristicApproverMasterResource extends Resource
                     ->searchable()
                     ->sortable(),
                 Tables\Columns\TextColumn::make('characteristic_field')
-                    ->label('Characteristic Field')
+                    ->label('Master Characteristic Field')
                     ->alignCenter()
                     ->searchable()
                     ->formatStateUsing(fn (string $state): string => strtoupper(__($state)))
@@ -271,6 +286,22 @@ class CharacteristicApproverMasterResource extends Resource
                     Tables\Actions\ForceDeleteBulkAction::make(),
                     Tables\Actions\RestoreBulkAction::make(),
                 ]),
+            ])
+            ->headerActions([
+                // ImportAction::make()
+                //     ->label('Import Request Characteristics')
+                //     ->color('warning')
+                //     ->importer(CharacteristicApproverMasterImporter::class)
+                //     ->visible(function () {
+                //         return Filament::auth()->user()->can('view import characteristic approver master');
+                //     }),
+                ExportAction::make()
+                    ->label('Export Request Characteristics')
+                    ->color('warning')
+                    ->exporter(CharacteristicApproverMasterExporter::class)
+                    ->visible(function () {
+                        return Filament::auth()->user()->can('view export characteristic approver master');
+                    }),
             ]);
     }