diff --git a/packages/Webkul/CustomerDocument/src/Config/system.php b/packages/Webkul/CustomerDocument/src/Config/system.php
new file mode 100644
index 000000000..883fef1b7
--- /dev/null
+++ b/packages/Webkul/CustomerDocument/src/Config/system.php
@@ -0,0 +1,22 @@
+<?php
+
+return [
+    [
+        'key' => 'customer.settings.documents',
+        'name' => 'customerdocument::app.admin.customers.documents',
+        'sort' => 4,
+        'fields' => [
+            [
+                'name' => 'size',
+                'title' => 'customerdocument::app.admin.customers.size',
+                'type' => 'text',
+                'validation' => 'decimal:2'
+            ], [
+                'name' => 'allowed_extensions',
+                'title' => 'customerdocument::app.admin.customers.allowed-types',
+                'type' => 'text',
+                'validation' => 'required'
+            ]
+        ],
+    ]
+];
\ No newline at end of file
diff --git a/packages/Webkul/CustomerDocument/src/Http/Controllers/DocumentController.php b/packages/Webkul/CustomerDocument/src/Http/Controllers/DocumentController.php
index 6fc73a74e..12d0482ef 100644
--- a/packages/Webkul/CustomerDocument/src/Http/Controllers/DocumentController.php
+++ b/packages/Webkul/CustomerDocument/src/Http/Controllers/DocumentController.php
@@ -7,6 +7,7 @@ use Illuminate\Http\Response;
 use Webkul\CustomerDocument\Repositories\CustomerDocumentRepository;
 use Webkul\CustomerDocument\Http\Controllers\Controller;
 use Illuminate\Support\Facades\Storage;
+use Validator;
 
 /**
  * Document controlller
@@ -61,35 +62,55 @@ class DocumentController extends Controller
     */
     public function upload()
     {
-        $valid_extension = ['xlsx', 'csv', 'xls', 'ods', 'png', 'jpeg', 'zip'];
+        $availableMimes = core()->getConfigData('customer.settings.documents.allowed_extensions');
+        $maxSize = core()->getConfigData('customer.settings.documents.size');
 
-        if (! in_array(request()->file('file')->getClientOriginalExtension(), $valid_extension)) {
-            session()->flash('error', trans('customerdocument::app.admin.customers.upload-error'));
+        if ($maxSize == null) {
+            $maxSize = 5 * 1024;
+        } else {
+            $maxSize = $maxSize * 1024;
+        }
+
+        $maxSize = 10;
+
+        $customerId = request()->input('customer_id');
+
+        if (strlen($availableMimes)) {
+            $validator = Validator::make(request()->input(), [
+                'file' => 'required|file|mimes:'.$availableMimes.'|size:'.$maxSize
+            ]);
+        } else {
+            $validator = Validator::make(request()->input(), [
+                'file' => 'required|file|size:'.$maxSize
+            ]);
+        }
+
+        if ($validator->fails()) {
+            session()->flash('error', $validator->errors());
+            return redirect()->back();
+        }
+
+        try {
+            $data = request()->all();
+
+            if (request()->hasFile('file')) {
+                $dir = 'customer';
+                $document['path'] = request()->file('file')->store($dir);
+            }
+
+            $document['customer_id'] = $data['customer_id'];
+            $document['name'] = $data['name'];
+            $document['description'] = $data['description'];
+
+            $this->customerDocument->create($document);
+
+            session()->flash('success', trans('customerdocument::app.admin.customers.upload-success'));
 
             return redirect()->back();
-        } else {
-            try {
-                $data = request()->all();
+        } catch (\Exception $e) {
+            session()->flash('error', $e);
 
-                if (request()->hasFile('file')) {
-                    $dir = 'customer';
-                    $document['path'] = request()->file('file')->store($dir);
-                }
-
-                $document['customer_id'] = $data['customer_id'];
-                $document['name'] = $data['name'];
-                $document['description'] = $data['description'];
-
-                $this->customerDocument->create($document);
-
-                session()->flash('success', trans('customerdocument::app.admin.customers.upload-success'));
-
-                return redirect()->back();
-            } catch (\Exception $e) {
-                session()->flash('error', $e);
-
-                return redirect()->back();
-            }
+            return redirect()->back();
         }
     }
 
diff --git a/packages/Webkul/CustomerDocument/src/Providers/CustomerDocumentServiceProvider.php b/packages/Webkul/CustomerDocument/src/Providers/CustomerDocumentServiceProvider.php
index ed4566a3c..c2fe1a852 100644
--- a/packages/Webkul/CustomerDocument/src/Providers/CustomerDocumentServiceProvider.php
+++ b/packages/Webkul/CustomerDocument/src/Providers/CustomerDocumentServiceProvider.php
@@ -49,5 +49,9 @@ class CustomerDocumentServiceProvider extends ServiceProvider
         $this->mergeConfigFrom(
             dirname(__DIR__) . '/Config/menu.php', 'menu.customer'
         );
+
+        $this->mergeConfigFrom(
+            dirname(__DIR__) . '/Config/system.php', 'core'
+        );
     }
 }
\ No newline at end of file
diff --git a/packages/Webkul/CustomerDocument/src/Resources/lang/en/app.php b/packages/Webkul/CustomerDocument/src/Resources/lang/en/app.php
index 62b076968..73500a656 100644
--- a/packages/Webkul/CustomerDocument/src/Resources/lang/en/app.php
+++ b/packages/Webkul/CustomerDocument/src/Resources/lang/en/app.php
@@ -15,7 +15,10 @@ return [
             'allowed-type' => 'Allowed Type :',
             'file-type' => 'csv, xls, xlsx, ods, png, jpeg, zip.',
             'upload-error' => 'The file must be a file of type: csv, xls, xlsx, ods, png, jpeg, zip.',
-            'description' => 'Description'
+            'description' => 'Description',
+            'size' => 'Max Size Allowed (MegaBytes)',
+            'allowed-types' => 'Allowed Types (Use comma to separate multiple formats)',
+            'any-type' => 'All file types are allowed'
         ],
     ],
 ];
\ No newline at end of file
diff --git a/packages/Webkul/CustomerDocument/src/Resources/views/admin/customers/upload.blade.php b/packages/Webkul/CustomerDocument/src/Resources/views/admin/customers/upload.blade.php
index 001f05989..9fa2c3150 100644
--- a/packages/Webkul/CustomerDocument/src/Resources/views/admin/customers/upload.blade.php
+++ b/packages/Webkul/CustomerDocument/src/Resources/views/admin/customers/upload.blade.php
@@ -65,16 +65,34 @@ $documents = $customerDocumentRepository->findWhere(['customer_id' => $customer-
 
             <div class="control-group" :class="[errors.has('description') ? 'has-error' : '']">
                 <label for="description">{{ __('customerdocument::app.admin.customers.description') }}</label>
+
                 <textarea class="control" id="description" name="description" data-vv-as="&quot;{{ __('customerdocument::app.admin.customers.description') }}&quot;" value="{{ old('description') }}"/
                 ></textarea>
+
                 <span class="control-error" v-if="errors.has('description')">@{{ errors.first('description') }}</span>
             </div>
 
             <div class="control-group" :class="[errors.has('file') ? 'has-error' : '']">
-                <label for="file" class="required">{{ __('customerdocument::app.admin.customers.file') }}</label>
+                <label for="file" class="required">{{ __
+                ('customerdocument::app.admin.customers.file') }}</label>
+
                 <input v-validate="'required'" type="file" class="control" id="file" name="file" data-vv-as="&quot;{{ __('customerdocument::app.admin.customers.file') }}&quot;" value="{{ old('file') }}" style="padding-top: 5px">
+
+                @php
+                    $allowedTypes = core()->getConfigData('customer.settings.documents.allowed_extensions');
+                @endphp
+
                 <span>{{ __('customerdocument::app.admin.customers.allowed-type') }}</span>
-                <span><b>{{ __('customerdocument::app.admin.customers.file-type') }}</b></span>
+                <span>
+                    <b>
+                        @if ($allowedTypes != null)
+                            {{ $allowedTypes }}
+                        @else
+                            {{ __('customerdocument::app.admin.customers.any-type') }}
+                        @endif
+
+                    </b>
+                </span>
                 <span class="control-error" v-if="errors.has('file')">@{{ errors.first('file') }}</span>
             </div>
 
diff --git a/packages/Webkul/CustomerGroupCatalog/src/Repositories/CategoryRepository.php b/packages/Webkul/CustomerGroupCatalog/src/Repositories/CategoryRepository.php
index e65b49c3f..fb433dedd 100644
--- a/packages/Webkul/CustomerGroupCatalog/src/Repositories/CategoryRepository.php
+++ b/packages/Webkul/CustomerGroupCatalog/src/Repositories/CategoryRepository.php
@@ -46,37 +46,37 @@ class CategoryRepository extends BaseCategoryRepository
         $customer = auth()->guard(request()->has('token') ? 'api' : 'customer')->user();
 
         $categoryIds = [];
-        $categoryShowId = [];
+        $showCategories = [];
+        $parentCategoryIds = [];
 
         if (! $customer) {
             $categoryIds = app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->findOneByField('code', 'guest')->categories()->pluck('id');
         } else {
             if ($customer->group) {
-                $categoryIds = app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->find($customer->group->id)->categories()->get();
+                $categories = app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->find($customer->group->id)->categories()->get();
 
-                $parentIds = app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->find($customer->group->id)->categories()->pluck('parent_id')->toArray();
+                $categoryIds = app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->find($customer->group->id)->categories()->pluck('id')->toArray();
 
-                if (in_array(NULL, $parentIds)) {
-                    foreach ($categoryIds as $categoryId) {
-                        foreach ($parentIds as $parentId) {
-                            if ($categoryId->parent_id == $parentId) {
-                                $categoryShowId[] = $categoryId->id;
-                            }
+                foreach ($categories as $category) {
+                    $parentCategoryIds[] = $category->id;
+                    $parentCategory = $this->getParentCategory($category->parent_id);
+
+                    $result = array_merge($parentCategoryIds, $parentCategory);
+                    $count = 0;
+                    foreach($result as $cat) {
+                        if (in_array($cat, $categoryIds)) {
+                            $count++;
                         }
                     }
 
-                    if (count($categoryShowId) > 0) {
-                        $categoryIds = array_unique($categoryShowId);
-                    } else {
-                        $categoryIds = [];
+                    if (count($result) == $count) {
+                        $showCategories[] = $category->id;
                     }
-                } else {
-                    $categoryIds = [];
                 }
             }
         }
 
-        if (count($categoryIds)) {
+        if (count($showCategories)) {
             $categories[$id] = $id
                     ? $this->model::orderBy('position', 'ASC')->where('status', 1)->whereIn('id', $categoryIds)->descendantsOf($id)->toTree()
                     : $this->model::orderBy('position', 'ASC')->where('status', 1)->whereIn('id', $categoryIds)->get()->toTree();
@@ -90,4 +90,22 @@ class CategoryRepository extends BaseCategoryRepository
             return [];
         }
     }
+
+    /**
+     * get parent category
+     *
+     * @param integer $id
+     * @return array
+     */
+    public function getParentCategory($parentId) {
+        $parentCategories = [];
+        $parentCategory = $this->getModel()->where('id', $parentId)->first();
+
+        if ($parentCategory->parent_id != null) {
+            $parentCategories[] = $parentCategory->id;
+            $this->getParentCategory($parentCategory->parent_id);
+        }
+
+        return $parentCategories;
+    }
 }
\ No newline at end of file
diff --git a/packages/Webkul/CustomerGroupCatalog/src/Resources/lang/en/app.php b/packages/Webkul/CustomerGroupCatalog/src/Resources/lang/en/app.php
index a48dab7e9..61a55e305 100644
--- a/packages/Webkul/CustomerGroupCatalog/src/Resources/lang/en/app.php
+++ b/packages/Webkul/CustomerGroupCatalog/src/Resources/lang/en/app.php
@@ -4,7 +4,7 @@ return [
     'customers' => [
         'groups' => [
             'general' => 'General',
-            'linked-product-categories' => 'Linked Products and Categories',
+            'linked-product-categories' => 'Linked Categories',
             'categories' => 'Categories',
             'products' => 'Products',
             'search-hint' => 'Start typing name',
diff --git a/resources/views/vendor/admin/customers/groups/create.blade.php b/resources/views/vendor/admin/customers/groups/create.blade.php
index 7b6624eb0..d8fde03ef 100644
--- a/resources/views/vendor/admin/customers/groups/create.blade.php
+++ b/resources/views/vendor/admin/customers/groups/create.blade.php
@@ -12,7 +12,7 @@
                 <div class="page-title">
                     <h1>
                         <i class="icon angle-left-icon back-link" onclick="history.length > 1 ? history.go(-1) : window.location = '{{ url('/admin/dashboard') }}';"></i>
-                        
+
                         {{ __('admin::app.customers.groups.add-title') }}
                     </h1>
                 </div>
@@ -31,6 +31,12 @@
                     <accordian :title="'{{ __('customergroupcatalog::app.customers.groups.general') }}'" :active="true">
                         <div slot="body">
 
+                            <div class="control-group" :class="[errors.has('code') ? 'has-error' : '']">
+                                <label for="code" class="required">{{ __('admin::app.customers.groups.code') }}</label>
+                                <input v-validate="'required'" class="control" id="code" name="code" data-vv-as="&quot;{{ __('admin::app.customers.groups.code') }}&quot;" v-code/>
+                                <span class="control-error" v-if="errors.has('code')">@{{ errors.first('code') }}</span>
+                            </div>
+
                             <div class="control-group" :class="[errors.has('name') ? 'has-error' : '']">
                                 <label for="name" class="required">
                                     {{ __('admin::app.customers.groups.name') }}
@@ -74,7 +80,7 @@
                         </li>
 
                         <li v-if='! searched_results[key].length && search_terms[key].length && ! is_searching[key]'>
-                            {{ __('admin::app.catalog.products.no-result-found') }}
+                            {{ __('customergroupcatalog::app.customers.groups.no-result-found') }}
                         </li>
 
                         <li v-if="is_searching[key] && search_terms[key].length">
@@ -116,7 +122,7 @@
 
                     saved_results: {
                         products: [],
-                        
+
                         categories: [],
                     },
 
@@ -142,7 +148,7 @@
                         'products': "{{ __('customergroupcatalog::app.customers.groups.products') }}",
 
                         'categories': "{{ __('customergroupcatalog::app.customers.groups.categories') }}",
-                    }                    
+                    }
                 }
             },
 
@@ -185,7 +191,7 @@
 
                         return;
                     }
-                    
+
                     this.$http.get ("{{ route('admin.customer_group_catalog.search.catalog') }}", {params: {query: this.search_terms[key], type: key}})
                         .then (function(response) {
                              for (var key1 in this_this.saved_results[key]) {
diff --git a/resources/views/vendor/admin/customers/groups/edit.blade.php b/resources/views/vendor/admin/customers/groups/edit.blade.php
index 6671b9b39..d82c390ae 100644
--- a/resources/views/vendor/admin/customers/groups/edit.blade.php
+++ b/resources/views/vendor/admin/customers/groups/edit.blade.php
@@ -12,7 +12,7 @@
                 <div class="page-title">
                     <h1>
                         <i class="icon angle-left-icon back-link" onclick="history.length > 1 ? history.go(-1) : window.location = '{{ url('/admin/dashboard') }}';"></i>
-                        
+
                         {{ __('admin::app.customers.groups.edit-title') }}
                     </h1>
                 </div>
@@ -34,6 +34,13 @@
                     <accordian :title="'{{ __('customergroupcatalog::app.customers.groups.general') }}'" :active="true">
                         <div slot="body">
 
+                            <div class="control-group" :class="[errors.has('code') ? 'has-error' : '']">
+                                <label for="code" class="required">{{ __('admin::app.customers.groups.code') }}</label>
+                                <input type="text" v-validate="'required'" class="control" id="code" name="code" data-vv-as="&quot;{{ __('admin::app.customers.groups.code') }}&quot;" value="{{ $group->code }}" disabled="disabled"/>
+                                <input type="hidden" name="code" value="{{ $group->code }}"/>
+                                <span class="control-error" v-if="errors.has('code')">@{{ errors.first('code') }}</span>
+                            </div>
+
                             <div class="control-group" :class="[errors.has('name') ? 'has-error' : '']">
                                 <label for="name" class="required">
                                     {{ __('admin::app.customers.groups.name') }}
@@ -43,7 +50,7 @@
                             </div>
 
                         </div>
-                    
+
                     </accordian>
 
                     <accordian :title="'{{ __('customergroupcatalog::app.customers.groups.linked-product-categories') }}'">
@@ -76,7 +83,7 @@
                         </li>
 
                         <li v-if='! searched_results[key].length && search_terms[key].length && ! is_searching[key]'>
-                            {{ __('admin::app.catalog.products.no-result-found') }}
+                            {{ __('customergroupcatalog::app.customers.groups.no-result-found') }}
                         </li>
 
                         <li v-if="is_searching[key] && search_terms[key].length">
@@ -116,13 +123,13 @@
 
                     saved_results: {
                         products: [],
-                        
+
                         categories: []
                     },
 
                     linked_results: {
                         products: @json(app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->getProducts($group)),
-                        
+
                         categories: @json(app('Webkul\CustomerGroupCatalog\Repositories\CustomerGroupRepository')->getCategories($group))
                     },
 
@@ -148,7 +155,7 @@
                         products: "{{ __('customergroupcatalog::app.customers.groups.products') }}",
 
                         categories: "{{ __('customergroupcatalog::app.customers.groups.categories') }}"
-                    }                    
+                    }
                 }
             },
 
@@ -201,7 +208,7 @@
 
                         return;
                     }
-                    
+
                     this.$http.get ("{{ route('admin.customer_group_catalog.search.catalog') }}", {params: {query: this.search_terms[key], type: key}})
                         .then (function(response) {
                              for (var key1 in this_this.saved_results[key]) {