diff --git a/app/Http/Livewire/Tables/VenueTable.php b/app/Http/Livewire/Tables/VenueTable.php
index 4a936675..eabb1091 100644
--- a/app/Http/Livewire/Tables/VenueTable.php
+++ b/app/Http/Livewire/Tables/VenueTable.php
@@ -6,6 +6,7 @@ use App\Models\Venue;
 use Illuminate\Database\Eloquent\Builder;
 use Rappasoft\LaravelLivewireTables\DataTableComponent;
 use Rappasoft\LaravelLivewireTables\Views\Column;
+use Rappasoft\LaravelLivewireTables\Views\Columns\ImageColumn;
 
 class VenueTable extends DataTableComponent
 {
@@ -21,6 +22,14 @@ class VenueTable extends DataTableComponent
     public function columns(): array
     {
         return [
+            ImageColumn::make('')
+                       ->location(
+                           fn($row) => $row->getFirstMediaUrl('images', 'thumb')
+                       )
+                       ->attributes(fn($row) => [
+                           'class' => 'rounded h-16 w-16',
+                           'alt'   => $row->name.' Avatar',
+                       ]),
             Column::make("Name", "name")
                   ->sortable(),
             Column::make("Street", "street")
diff --git a/app/Models/Lecturer.php b/app/Models/Lecturer.php
index 998e33a0..3b10ca2a 100644
--- a/app/Models/Lecturer.php
+++ b/app/Models/Lecturer.php
@@ -47,7 +47,8 @@ class Lecturer extends Model implements HasMedia
     public function registerMediaCollections(): void
     {
         $this->addMediaCollection('avatar')
-             ->singleFile();
+             ->singleFile()
+             ->useFallbackUrl(asset('img/einundzwanzig-cover-lesestunde.png'));
     }
 
     /**
diff --git a/app/Models/Venue.php b/app/Models/Venue.php
index 1fd7040a..e7f28de8 100644
--- a/app/Models/Venue.php
+++ b/app/Models/Venue.php
@@ -4,13 +4,20 @@ namespace App\Models;
 
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
+use Spatie\Image\Manipulations;
+use Spatie\MediaLibrary\HasMedia;
+use Spatie\MediaLibrary\InteractsWithMedia;
+use Spatie\MediaLibrary\MediaCollections\Models\Media;
 use Spatie\Sluggable\HasSlug;
 use Spatie\Sluggable\SlugOptions;
+use Staudenmeir\EloquentHasManyDeep\HasRelationships;
 
-class Venue extends Model
+class Venue extends Model implements HasMedia
 {
     use HasFactory;
     use HasSlug;
+    use HasRelationships;
+    use InteractsWithMedia;
 
     /**
      * The attributes that aren't mass assignable.
@@ -27,6 +34,24 @@ class Venue extends Model
         'city_id' => 'integer',
     ];
 
+    public function registerMediaConversions(Media $media = null): void
+    {
+        $this
+            ->addMediaConversion('preview')
+            ->fit(Manipulations::FIT_CROP, 300, 300)
+            ->nonQueued();
+        $this->addMediaConversion('thumb')
+             ->fit(Manipulations::FIT_CROP, 130, 130)
+             ->width(130)
+             ->height(130);
+    }
+
+    public function registerMediaCollections(): void
+    {
+        $this->addMediaCollection('images')
+             ->useFallbackUrl(asset('img/einundzwanzig-cover-lesestunde.png'));
+    }
+
     /**
      * Get the options for generating the slug.
      */
@@ -43,6 +68,16 @@ class Venue extends Model
         return $this->belongsTo(City::class);
     }
 
+    public function lecturers()
+    {
+        return $this->hasManyDeepFromRelations($this->courses(), (new Course())->lecturer());
+    }
+
+    public function courses()
+    {
+        return $this->hasManyDeepFromRelations($this->events(), (new Event())->course());
+    }
+
     public function events(): \Illuminate\Database\Eloquent\Relations\HasMany
     {
         return $this->hasMany(Event::class);
diff --git a/app/Nova/Lecturer.php b/app/Nova/Lecturer.php
index 580704a1..fda9cff1 100644
--- a/app/Nova/Lecturer.php
+++ b/app/Nova/Lecturer.php
@@ -7,6 +7,7 @@ use Illuminate\Http\Request;
 use Laravel\Nova\Fields\BelongsTo;
 use Laravel\Nova\Fields\Boolean;
 use Laravel\Nova\Fields\Field;
+use Laravel\Nova\Fields\ID;
 use Laravel\Nova\Fields\Text;
 use Laravel\Nova\Http\Requests\NovaRequest;
 
@@ -52,9 +53,11 @@ class Lecturer extends Resource
     public function fields(Request $request)
     {
         return [
+            ID::make()
+              ->sortable(),
+
             Images::make('Avatar', 'avatar') // second parameter is the media collection name
-                  ->conversionOnIndexView('thumb') // conversion used to display the image
-                  ->rules('required'), // validation rules
+                  ->conversionOnIndexView('thumb'), // conversion used to display the image
 
             Text::make('Name')
                 ->rules('required', 'string'),
diff --git a/app/Nova/Venue.php b/app/Nova/Venue.php
index acf17216..f24220c8 100644
--- a/app/Nova/Venue.php
+++ b/app/Nova/Venue.php
@@ -2,6 +2,7 @@
 
 namespace App\Nova;
 
+use Ebess\AdvancedNovaMediaLibrary\Fields\Images;
 use Illuminate\Http\Request;
 use Laravel\Nova\Fields\BelongsTo;
 use Laravel\Nova\Fields\ID;
@@ -43,6 +44,9 @@ class Venue extends Resource
             ID::make()
               ->sortable(),
 
+            Images::make('Bilder', 'images') // second parameter is the media collection name
+                  ->conversionOnIndexView('thumb'), // conversion used to display the image
+
             Text::make('Name')
                 ->rules('required', 'string'),
 
diff --git a/app/Policies/PermissionPolicy.php b/app/Policies/PermissionPolicy.php
index f5b993b0..b086f0a0 100644
--- a/app/Policies/PermissionPolicy.php
+++ b/app/Policies/PermissionPolicy.php
@@ -18,7 +18,7 @@ class PermissionPolicy
      */
     public function viewAny(User $user)
     {
-        return true;
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -30,7 +30,7 @@ class PermissionPolicy
      */
     public function view(User $user, Permission $permission)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -41,7 +41,7 @@ class PermissionPolicy
      */
     public function create(User $user)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -53,7 +53,7 @@ class PermissionPolicy
      */
     public function update(User $user, Permission $permission)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -65,7 +65,7 @@ class PermissionPolicy
      */
     public function delete(User $user, Permission $permission)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -77,7 +77,7 @@ class PermissionPolicy
      */
     public function restore(User $user, Permission $permission)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 
     /**
@@ -89,6 +89,6 @@ class PermissionPolicy
      */
     public function forceDelete(User $user, Permission $permission)
     {
-        //
+        return $user->hasRole('super-admin');
     }
 }
diff --git a/app/Policies/VenuePolicy.php b/app/Policies/VenuePolicy.php
index 213f7e94..e08799b6 100644
--- a/app/Policies/VenuePolicy.php
+++ b/app/Policies/VenuePolicy.php
@@ -14,6 +14,7 @@ class VenuePolicy
      * Determine whether the user can view any models.
      *
      * @param  \App\Models\User  $user
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function viewAny(User $user)
@@ -26,6 +27,7 @@ class VenuePolicy
      *
      * @param  \App\Models\User  $user
      * @param  \App\Models\Venue  $venue
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function view(User $user, Venue $venue)
@@ -37,6 +39,7 @@ class VenuePolicy
      * Determine whether the user can create models.
      *
      * @param  \App\Models\User  $user
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function create(User $user)
@@ -49,11 +52,13 @@ class VenuePolicy
      *
      * @param  \App\Models\User  $user
      * @param  \App\Models\Venue  $venue
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function update(User $user, Venue $venue)
     {
-        //
+        return $venue->lecturers->where('team_id', $user->current_team_id)
+                                ->isNotEmpty();
     }
 
     /**
@@ -61,6 +66,7 @@ class VenuePolicy
      *
      * @param  \App\Models\User  $user
      * @param  \App\Models\Venue  $venue
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function delete(User $user, Venue $venue)
@@ -73,6 +79,7 @@ class VenuePolicy
      *
      * @param  \App\Models\User  $user
      * @param  \App\Models\Venue  $venue
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function restore(User $user, Venue $venue)
@@ -85,6 +92,7 @@ class VenuePolicy
      *
      * @param  \App\Models\User  $user
      * @param  \App\Models\Venue  $venue
+     *
      * @return \Illuminate\Auth\Access\Response|bool
      */
     public function forceDelete(User $user, Venue $venue)
diff --git a/composer.json b/composer.json
index 04728989..c184ea68 100644
--- a/composer.json
+++ b/composer.json
@@ -27,6 +27,7 @@
         "spatie/laravel-google-fonts": "^1.2",
         "spatie/laravel-medialibrary": "^10.0.0",
         "spatie/laravel-sluggable": "^3.4",
+        "staudenmeir/eloquent-has-many-deep": "^1.7",
         "stijnvanouplines/blade-country-flags": "^1.0",
         "symfony/http-client": "^6.2",
         "symfony/mailgun-mailer": "^6.2",
diff --git a/composer.lock b/composer.lock
index a6980481..e06cec19 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "02bdf9ef8956ca2e347fc6c467ca4330",
+    "content-hash": "3b14fa82c7df08a15f0e0584c572402b",
     "packages": [
         {
             "name": "akuechler/laravel-geoly",
@@ -6779,6 +6779,102 @@
             ],
             "time": "2022-08-23T07:15:15+00:00"
         },
+        {
+            "name": "staudenmeir/eloquent-has-many-deep",
+            "version": "v1.17",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/staudenmeir/eloquent-has-many-deep.git",
+                "reference": "435ce579703ac387ecd97caf98502bd511d735f6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/staudenmeir/eloquent-has-many-deep/zipball/435ce579703ac387ecd97caf98502bd511d735f6",
+                "reference": "435ce579703ac387ecd97caf98502bd511d735f6",
+                "shasum": ""
+            },
+            "require": {
+                "illuminate/database": "^9.0",
+                "php": "^8.0.2",
+                "staudenmeir/eloquent-has-many-deep-contracts": "^1.0"
+            },
+            "require-dev": {
+                "awobaz/compoships": "^2.1",
+                "illuminate/pagination": "^9.0",
+                "nesbot/carbon": "^2.62.1",
+                "phpunit/phpunit": "^9.5",
+                "staudenmeir/eloquent-eager-limit": "^1.7"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Staudenmeir\\EloquentHasManyDeep\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonas Staudenmeir",
+                    "email": "mail@jonas-staudenmeir.de"
+                }
+            ],
+            "description": "Laravel Eloquent HasManyThrough relationships with unlimited levels",
+            "support": {
+                "issues": "https://github.com/staudenmeir/eloquent-has-many-deep/issues",
+                "source": "https://github.com/staudenmeir/eloquent-has-many-deep/tree/v1.17"
+            },
+            "funding": [
+                {
+                    "url": "https://paypal.me/JonasStaudenmeir",
+                    "type": "custom"
+                }
+            ],
+            "time": "2022-11-16T07:09:47+00:00"
+        },
+        {
+            "name": "staudenmeir/eloquent-has-many-deep-contracts",
+            "version": "v1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts.git",
+                "reference": "f9589acaaf25f55f38c6dd9d6c1caa6ff62addf6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/staudenmeir/eloquent-has-many-deep-contracts/zipball/f9589acaaf25f55f38c6dd9d6c1caa6ff62addf6",
+                "reference": "f9589acaaf25f55f38c6dd9d6c1caa6ff62addf6",
+                "shasum": ""
+            },
+            "require": {
+                "illuminate/database": "^9.0",
+                "php": "^8.0.2"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Staudenmeir\\EloquentHasManyDeepContracts\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jonas Staudenmeir",
+                    "email": "mail@jonas-staudenmeir.de"
+                }
+            ],
+            "description": "Contracts for staudenmeir/eloquent-has-many-deep",
+            "support": {
+                "issues": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts/issues",
+                "source": "https://github.com/staudenmeir/eloquent-has-many-deep-contracts/tree/v1.0"
+            },
+            "time": "2022-09-12T18:34:56+00:00"
+        },
         {
             "name": "stijnvanouplines/blade-country-flags",
             "version": "1.0.2",
diff --git a/public/img/einundzwanzig-cover-lesestunde.png b/public/img/einundzwanzig-cover-lesestunde.png
new file mode 100644
index 00000000..4b7f852b
Binary files /dev/null and b/public/img/einundzwanzig-cover-lesestunde.png differ