diff --git a/config/install/field.field.node.publication.field_publication_authors.yml b/config/install/field.field.node.publication.field_publication_authors.yml
index a393643..31bf545 100644
--- a/config/install/field.field.node.publication.field_publication_authors.yml
+++ b/config/install/field.field.node.publication.field_publication_authors.yml
@@ -4,13 +4,13 @@ dependencies:
   config:
     - field.storage.node.field_publication_authors
     - node.type.publication
-    - taxonomy.vocabulary.department
+    - taxonomy.vocabulary.organisation
 id: node.publication.field_publication_authors
 field_name: field_publication_authors
 entity_type: node
 bundle: publication
 label: 'Publication author'
-description: 'Use this field to select an author. Choose one mostly applicable.'
+description: 'Start typing to choose one publication author. (Authors are added in the organisation taxonomy by your Site Admins.)'
 required: false
 translatable: false
 default_value: {  }
@@ -19,5 +19,10 @@ settings:
   handler: 'default:taxonomy_term'
   handler_settings:
     target_bundles:
-      department: department
+      organisation: organisation
+    sort:
+      field: name
+      direction: asc
+    auto_create: false
+    auto_create_bundle: department
 field_type: entity_reference
diff --git a/config/install/field.storage.node.field_publication_authors.yml b/config/install/field.storage.node.field_publication_authors.yml
index c2e73d1..c9263fb 100644
--- a/config/install/field.storage.node.field_publication_authors.yml
+++ b/config/install/field.storage.node.field_publication_authors.yml
@@ -2,8 +2,12 @@ langcode: en
 status: true
 dependencies:
   module:
+    - field_permissions
     - node
     - taxonomy
+third_party_settings:
+  field_permissions:
+    permission_type: public
 id: node.field_publication_authors
 field_name: field_publication_authors
 entity_type: node
@@ -12,7 +16,7 @@ settings:
   target_type: taxonomy_term
 module: core
 locked: false
-cardinality: -1
+cardinality: 1
 translatable: true
 indexes: {  }
 persist_with_no_fields: false
diff --git a/config/install/taxonomy.vocabulary.organisation.yml b/config/install/taxonomy.vocabulary.organisation.yml
new file mode 100644
index 0000000..c542f52
--- /dev/null
+++ b/config/install/taxonomy.vocabulary.organisation.yml
@@ -0,0 +1,7 @@
+langcode: en
+status: true
+dependencies: {  }
+name: Organisation
+vid: organisation
+description: 'Currently used for ''Publication author'' non-mandatory field'
+weight: 0
diff --git a/src/TidePublicationOperation.php b/src/TidePublicationOperation.php
new file mode 100644
index 0000000..95f0ed8
--- /dev/null
+++ b/src/TidePublicationOperation.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace Drupal\tide_publication;
+
+use Drupal\taxonomy\Entity\Vocabulary;
+
+/**
+ * Tide publication modules operations.
+ */
+class TidePublicationOperation {
+
+  /**
+   * Creates a new vocabulary.
+   *
+   * @param string $vocabulary
+   *   The new vocabulary.
+   */
+  public function createVocabulary(string $vocabulary) {
+    $vocabulary = Vocabulary::create([
+      'vid' => $vocabulary,
+      'description' => '',
+      'name' => ucfirst($vocabulary),
+    ]);
+    $vocabulary->save();
+  }
+
+}
diff --git a/tide_publication.install b/tide_publication.install
index 13ead54..d775cd1 100644
--- a/tide_publication.install
+++ b/tide_publication.install
@@ -9,6 +9,8 @@ use Drupal\Core\Entity\Entity\EntityFormDisplay;
 use Drupal\field\Entity\FieldConfig;
 use Drupal\field\Entity\FieldStorageConfig;
 use Drupal\search_api\Item\Field;
+use Drupal\taxonomy\Entity\Vocabulary;
+use Drupal\tide_publication\TidePublicationOperation;
 use Drupal\user\Entity\Role;
 use Drupal\workflows\Entity\Workflow;
 
@@ -1056,3 +1058,46 @@ function tide_publication_update_8015() {
     $form_display->save();
   }
 }
+
+/**
+ * Update field_publication_authors cardinality and vocabulary to organisation.
+ */
+function tide_publication_update_8016() {
+  $tidePublicationOperation = new TidePublicationOperation();
+  $vocabulary = 'organisation';
+  $config_factory = \Drupal::configFactory();
+  $config = $config_factory->getEditable('field.storage.node.field_publication_authors');
+  $config->set('cardinality', 1);
+  $config->save();
+
+  // Creates vocabulary if doesn't exist.
+  $vocabularies = Vocabulary::loadMultiple();
+  if (!isset($vocabularies[$vocabulary])) {
+    $tidePublicationOperation->createVocabulary($vocabulary);
+  }
+
+  $field = FieldConfig::loadByName('node', 'publication', 'field_publication_authors');
+  if ($field->get('field_type') === 'entity_reference') {
+    $new_field = $field->toArray();
+    $new_field['field_type'] = 'entity_reference';
+    $new_field['description'] = 'Start typing to choose one publication author. (Authors are added in the organisation taxonomy by your Site Admins.)';
+    $new_field['dependencies'] = [
+      'config' => [
+        'field.storage.' . $config->get('id'),
+        'node.type.publication',
+        'taxonomy.vocabulary.' . $vocabulary,
+      ],
+    ];
+    $new_field['settings'] = [
+      'handler_settings' => [
+        'target_bundles' => [
+          'department' => $vocabulary,
+        ],
+      ],
+    ];
+    $new_field = FieldConfig::create($new_field);
+    $new_field->original = $field;
+    $new_field->enforceIsNew(FALSE);
+    $new_field->save();
+  }
+}
diff --git a/tide_publication.module b/tide_publication.module
index f46464b..38e0df2 100644
--- a/tide_publication.module
+++ b/tide_publication.module
@@ -356,4 +356,7 @@ function tide_publication_form_alter(&$form, FormStateInterface $form_state, $fo
       }
     }
   }
+  if (isset($form['field_publication_authors'])) {
+    $form['field_publication_authors']['widget'][0]['target_id']['#placeholder'] = t('Start typing');
+  }
 }