diff --git a/doc/conf/LSattribute/LSattr_html/LSattr_html_select_list.docbook b/doc/conf/LSattribute/LSattr_html/LSattr_html_select_list.docbook
index 778f7274..7c7fba2d 100644
--- a/doc/conf/LSattribute/LSattr_html/LSattr_html_select_list.docbook
+++ b/doc/conf/LSattribute/LSattr_html/LSattr_html_select_list.docbook
@@ -46,6 +46,7 @@
        )
      )
    ),
+   'get_possible_values' => [callable],
    'translate_labels' => [booléen],
    'sort' => [Booléen],
    'sortDirection' => '[ASC|DESC]'
@@ -178,6 +179,56 @@
   </listitem>
 </varlistentry>
 
+<varlistentry>
+  <term>get_possible_values</term>
+  <listitem>
+    <para>Paramètre permettant de spécifier un <emphasis>callable</emphasis> qui sera utilisé
+    pour lister les valeurs possibles de l'attribut. Il recevra en paramètres les informations
+    suivantes:
+    <variablelist>
+      <varlistentry>
+        <term>$options</term>
+        <listitem>
+          <simpara>Les options HTML de l'attribut.</simpara>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>$name</term>
+        <listitem>
+          <simpara>Le nom de l'attribut.</simpara>
+        </listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term>&amp;$ldapObject</term>
+        <listitem>
+          <simpara>Une référence à l'objet <literal>LSldapObject</literal>.</simpara>
+        </listitem>
+      </varlistentry>
+
+    </variablelist>
+    </para>
+    <para>La valeur de retour attendue est un tableau associatif des valeurs possibles
+    de l'attribut avec la valeur que prendra l'attribut en tant que clé et le label
+    correspondant en tant que valeur. Tout autre retour sera considéré comme un échec
+    et déclenchera une erreur.</para>
+    <para>Il est également possible de regrouper des valeurs possibles de l'attribut: pour
+    cela, le tableau retourné devra lui-même contenir un tableau associatif contenant la
+    label traduit du groupe sous la clé <literal>label</literal> et les valeurs possibles
+    du groupe sous la clé <literal>possible_values</literal>.</para>
+    <para>Les valeurs retournées pourront être combinées avec les autres valeurs possibles
+    configurées de l'attribut. La prise en charge du tri des valeurs possibles est assurée
+    par la fonction appelante sauf dans le cas des sous-groupes de valeurs possibles. Dans
+    ce cas, la méthode <literal>LSattr_html_select_list :: _sort()</literal> pourra être
+    utilisée pour trier les valeurs du sous-groupe: cette méthode accepte en paramètre une
+    référence du tableau des valeurs possibles ainsi que les options HTML de l'attribut.
+    </para>
+    <para>Si la traduction des labels des valeurs possibles de l'attribut est activées
+    (voir ci-dessous), celle-ci doit être prise en charge par la fonction configurée.</para>
+  </listitem>
+</varlistentry>
+
 <varlistentry>
   <term>translate_labels</term>
   <listitem>
diff --git a/src/includes/class/class.LSattr_html_select_list.php b/src/includes/class/class.LSattr_html_select_list.php
index 1979033f..d17df156 100644
--- a/src/includes/class/class.LSattr_html_select_list.php
+++ b/src/includes/class/class.LSattr_html_select_list.php
@@ -84,7 +84,7 @@ class LSattr_html_select_list extends LSattr_html{
   /**
    * Return array of possible values with translated labels (if enabled)
    *
-   * @param[in] $options Attribute options (optional)
+   * @param[in] $options Attribute HTML options (optional)
    * @param[in] $name Attribute name (optional)
    * @param[in] &$ldapObject Related LSldapObject (optional)
    *
@@ -93,10 +93,15 @@ class LSattr_html_select_list extends LSattr_html{
    * @retval array Associative array with possible values as key and corresponding
    *               translated label as value.
    */
-  public static function _getPossibleValues($options=false,$name=false,&$ldapObject=false) {
-    $retInfos = array();
-    $translate_labels = LSconfig :: get('translate_labels', true, 'bool', $options);
-    if (isset($options['possible_values']) && is_array($options['possible_values'])) {
+  public static function _getPossibleValues($options=false, $name=false, &$ldapObject=false) {
+    // Handle get_possible_values parameter
+    $retInfos = self :: getCallablePossibleValues($options, $name, $ldapObject);
+    if (!is_array($retInfos))
+      $retInfos = array();
+
+    // Handle other configured possible values
+    if (is_array($options) && isset($options['possible_values']) && is_array($options['possible_values'])) {
+      $translate_labels = LSconfig :: get('translate_labels', true, 'bool', $options);
       foreach($options['possible_values'] as $val_key => $val_label) {
         if($val_key==='OTHER_OBJECT') {
           $objInfos=static :: getLSobjectPossibleValues($val_label,$options,$name);
@@ -136,7 +141,7 @@ class LSattr_html_select_list extends LSattr_html{
       }
     }
 
-    static :: _sort($retInfos,$options);
+    static :: _sort($retInfos, $options);
 
     return $retInfos;
   }
@@ -163,11 +168,11 @@ class LSattr_html_select_list extends LSattr_html{
    * Apply sort feature on possible values if this feature is enabled
    *
    * @param[in] &$retInfos array Possible values array reference to sort
-   * @param[in] $options array|false Attribute options
+   * @param[in] $options array|false Attribute HTML options
    *
    * @retval void
    **/
-  protected static function _sort(&$retInfos, $options) {
+  public static function _sort(&$retInfos, $options) {
     if (!isset($options['sort']) || $options['sort']) {
       if (isset($options['sortDirection']) && $options['sortDirection']=='DESC') {
         uasort($retInfos,array('LSattr_html_select_list','_sortTwoValuesDesc'));
@@ -223,7 +228,7 @@ class LSattr_html_select_list extends LSattr_html{
    * Retourne un tableau des valeurs possibles d'un type d'objet
    *
    * @param[in] $conf OTHER_OBJECT configuration array
-   * @param[in] $options array|false Attribute options
+   * @param[in] $options array|false Attribute HTML options
    * @param[in] $name Attribute name
    *
    * @author Benjamin Renard <brenard@easter-eggs.com>
@@ -294,7 +299,7 @@ class LSattr_html_select_list extends LSattr_html{
    * Retourne un tableau des valeurs possibles d'un autre attribut
    *
    * @param[in] $attr OTHER_ATTRIBUTE configuration value
-   * @param[in] $options array|false Attribute options
+   * @param[in] $options array|false Attribute HTML options
    * @param[in] $name Attribute name
    * @param[in] $LSldapObject LSldapObject reference
    *
@@ -379,23 +384,81 @@ class LSattr_html_select_list extends LSattr_html{
     return $retInfos;
   }
 
+  /**
+   * Return array of possible values with translated labels (if enabled)
+   * by using specify callable
+   *
+   * @param[in] $options Attribute HTML options
+   * @param[in] $name Attribute name
+   * @param[in] &$ldapObject Related LSldapObject
+   *
+   * @author Benjamin Renard <brenard@easter-eggs.com>
+   *
+   * @retval array|false Associative array with possible values as key and corresponding
+   *                     translated label as value, or false in case of error.
+   */
+  public static function getCallablePossibleValues($options, $name, &$ldapObject) {
+    // Handle get_possible_values parameter
+    $get_possible_values = LSconfig :: get('get_possible_values', null, null, $options);
+    if (!$get_possible_values)
+      return array();
+
+    // Check callable
+    if (!is_callable($get_possible_values)) {
+      LSerror :: addErrorCode('LSattr_html_select_list_06', $name);
+      return false;
+    }
+
+    // Run callable
+    try {
+      $retInfos = call_user_func_array(
+        $get_possible_values,
+        array($options, $name, $ldapObject)
+      );
+    }
+    catch (Exception $er) {
+      self :: log_exception($er, strval($this)." -> _getPossibleValues(): exception occured running ".format_callable($get_possible_values));
+      $retInfos = null;
+    }
+
+    // Check result
+    if (!is_array($retInfos)) {
+      LSerror :: addErrorCode(
+        'LSattr_html_select_list_07',
+        array(
+          'attr' => $name,
+          'callable' => format_callable($get_possible_values)
+        )
+      );
+      return false;
+    }
+
+    return $retInfos;
+  }
+
 }
 
 /*
  * Error Codes
  */
 LSerror :: defineError('LSattr_html_select_list_01',
-___("LSattr_html_select_list : Configuration data are missing to generate the select list of the attribute %{attr}.")
+___("LSattr_html_select_list: Configuration data are missing to generate the select list of the attribute %{attr}.")
 );
 LSerror :: defineError('LSattr_html_select_list_02',
-___("LSattr_html_select_list : Invalid attribute %{attr} reference as OTHER_ATTRIBUTE possible values.")
+___("LSattr_html_select_list: Invalid attribute %{attr} reference as OTHER_ATTRIBUTE possible values.")
 );
 LSerror :: defineError('LSattr_html_select_list_03',
-___("LSattr_html_select_list : Attribute %{attr} referenced as OTHER_ATTRIBUTE possible values is not a jsonCompositeAttribute.")
+___("LSattr_html_select_list: Attribute %{attr} referenced as OTHER_ATTRIBUTE possible values is not a jsonCompositeAttribute.")
 );
 LSerror :: defineError('LSattr_html_select_list_04',
-___("LSattr_html_select_list : Fail to decode the following attribute %{attr} value as JSON : %{value}")
+___("LSattr_html_select_list: Fail to decode the following attribute %{attr} value as JSON : %{value}")
 );
 LSerror :: defineError('LSattr_html_select_list_05',
-___("LSattr_html_select_list : No component %{component} found in the following attribute %{attr} JSON value : %{value}")
+___("LSattr_html_select_list: No component %{component} found in the following attribute %{attr} JSON value : %{value}")
+);
+LSerror :: defineError('LSattr_html_select_list_06',
+___("LSattr_html_select_list: Invalid get_possible_values parameter found in configuration of attribute %{attr}: must be a callable.")
+);
+LSerror :: defineError('LSattr_html_select_list_07',
+___("LSattr_html_select_list: fail to retreive possible values of attribute %{attr} using configured function %{callable}.")
 );
diff --git a/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.mo b/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.mo
index 54f8a4d5..7df6033a 100644
Binary files a/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.mo and b/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.mo differ
diff --git a/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.po b/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.po
index 89cfbfef..8e816da1 100644
--- a/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.po
+++ b/src/lang/fr_FR.UTF8/LC_MESSAGES/ldapsaisie.po
@@ -8,7 +8,7 @@ msgstr ""
 "Project-Id-Version: LdapSaisie\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: \n"
-"PO-Revision-Date: 2020-09-21 15:46+0200\n"
+"PO-Revision-Date: 2020-09-22 14:32+0200\n"
 "Last-Translator: Benjamin Renard <brenard@zionetrix.net>\n"
 "Language-Team: LdapSaisie <ldapsaisie-users@lists.labs.libre-entreprise."
 "org>\n"
@@ -2083,46 +2083,62 @@ msgstr "Discuter avec cette personne."
 msgid "%s (Unparsable value)"
 msgstr "%s (valeur non-analysable)"
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:388
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:445
 msgid ""
-"LSattr_html_select_list : Configuration data are missing to generate the "
+"LSattr_html_select_list: Configuration data are missing to generate the "
 "select list of the attribute %{attr}."
 msgstr ""
 "LSattr_html_select_list : Des données de configuration sont manquantes pour "
 "générer la liste de sélection de l'attribut %{attr}."
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:391
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:448
 msgid ""
-"LSattr_html_select_list : Invalid attribute %{attr} reference as "
+"LSattr_html_select_list: Invalid attribute %{attr} reference as "
 "OTHER_ATTRIBUTE possible values."
 msgstr ""
 "LSattr_html_select_list : Référence invalide à l'attribut %{attr} comme "
 "valeurs possibles (OTHER_ATTRIBUTE)."
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:394
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:451
 msgid ""
-"LSattr_html_select_list : Attribute %{attr} referenced as OTHER_ATTRIBUTE "
+"LSattr_html_select_list: Attribute %{attr} referenced as OTHER_ATTRIBUTE "
 "possible values is not a jsonCompositeAttribute."
 msgstr ""
 "LSattr_html_select_list : L'attribute %{attr} référencé comme valeurs "
 "possibles (OTHER_ATTRIBUTE) n'est pas du type jsonCompositeAttribute."
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:397
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:454
 msgid ""
-"LSattr_html_select_list : Fail to decode the following attribute %{attr} "
+"LSattr_html_select_list: Fail to decode the following attribute %{attr} "
 "value as JSON : %{value}"
 msgstr ""
 "LSattr_html_select_list : Impossible de décodé la valeur JSON suivante de "
 "l'attribut %{attr} : %{value}"
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:400
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:457
 msgid ""
-"LSattr_html_select_list : No component %{component} found in the following "
+"LSattr_html_select_list: No component %{component} found in the following "
 "attribute %{attr} JSON value : %{value}"
 msgstr ""
 "LSattr_html_select_list : Le composant %{component} n'a pas été trouvé dans "
 "la valeur JSON de l'attribut %{attr} : %{value}"
 
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:460
+msgid ""
+"LSattr_html_select_list: Invalid get_possible_values parameter found in "
+"configuration of attribute %{attr}: must be a callable."
+msgstr ""
+"LSattr_html_select_list : Paramètre get_possible_values invalide trouvé dans "
+"la configuration de l'attribut %{attr} : cela doit être un callable."
+
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:463
+msgid ""
+"LSattr_html_select_list: fail to retreive possible values of attribute "
+"%{attr} using configured function %{callable}."
+msgstr ""
+"LSattr_html_select_list : Impossible de récupérer les valeurs possibles de "
+"l'attribut %{attr} en utilisant la fonction configurée %{callable}."
+
 #: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSformRule_inarray.php:57
 msgid ""
 "LSformRule_inarray : Possible values has not been configured to validate "
diff --git a/src/lang/ldapsaisie.pot b/src/lang/ldapsaisie.pot
index f0ab5049..a0c6eafe 100644
--- a/src/lang/ldapsaisie.pot
+++ b/src/lang/ldapsaisie.pot
@@ -1765,36 +1765,48 @@ msgstr ""
 msgid "%s (Unparsable value)"
 msgstr ""
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:388
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:445
 msgid ""
-"LSattr_html_select_list : Configuration data are missing to generate the "
+"LSattr_html_select_list: Configuration data are missing to generate the "
 "select list of the attribute %{attr}."
 msgstr ""
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:391
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:448
 msgid ""
-"LSattr_html_select_list : Invalid attribute %{attr} reference as "
+"LSattr_html_select_list: Invalid attribute %{attr} reference as "
 "OTHER_ATTRIBUTE possible values."
 msgstr ""
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:394
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:451
 msgid ""
-"LSattr_html_select_list : Attribute %{attr} referenced as OTHER_ATTRIBUTE "
+"LSattr_html_select_list: Attribute %{attr} referenced as OTHER_ATTRIBUTE "
 "possible values is not a jsonCompositeAttribute."
 msgstr ""
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:397
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:454
 msgid ""
-"LSattr_html_select_list : Fail to decode the following attribute %{attr} "
+"LSattr_html_select_list: Fail to decode the following attribute %{attr} "
 "value as JSON : %{value}"
 msgstr ""
 
-#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:400
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:457
 msgid ""
-"LSattr_html_select_list : No component %{component} found in the following "
+"LSattr_html_select_list: No component %{component} found in the following "
 "attribute %{attr} JSON value : %{value}"
 msgstr ""
 
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:460
+msgid ""
+"LSattr_html_select_list: Invalid get_possible_values parameter found in "
+"configuration of attribute %{attr}: must be a callable."
+msgstr ""
+
+#: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSattr_html_select_list.php:463
+msgid ""
+"LSattr_html_select_list: fail to retreive possible values of attribute "
+"%{attr} using configured function %{callable}."
+msgstr ""
+
 #: /home/brenard/dev/ldapsaisie_clean3/src/includes/class/class.LSformRule_inarray.php:57
 msgid ""
 "LSformRule_inarray : Possible values has not been configured to validate "