diff --git a/administrator/forms/circolare.xml b/administrator/forms/circolare.xml
index 980fff4..1afae16 100644
--- a/administrator/forms/circolare.xml
+++ b/administrator/forms/circolare.xml
@@ -18,9 +18,7 @@
     <field name="alias" type="text" label="JFIELD_ALIAS_LABEL" description="JFIELD_ALIAS_DESC" />
 
     <field name="categoria_id" type="Categoria" label="Categoria" required="true" />
-    <field name="usergroup_id" type="usergrouplist"
-      label="COM_CIRCOLARI_FORM_LBL_CIRCOLARE_USERGROUP"
-      description="COM_CIRCOLARI_FORM_DESC_CIRCOLARE_USERGROUP" />
+
     <field name="description" type="editor" label="COM_CIRCOLARI_FORM_LBL_CIRCOLARE_DESCRIPTION"
       filter="safehtml" buttons="true" />
     <field name="attachment" type="media" label="COM_CIRCOLARI_FORM_LBL_CIRCOLARE_ATTACHMENT"
@@ -38,6 +36,17 @@
 
     </field>
 
+
+    <field
+      name="usergroup_ids"
+      type="usergrouplist"
+      label="Gruppi abilitati alla firma"
+      description="Seleziona i gruppi che possono firmare la circolare"
+      multiple="true"
+      required="false"
+      showon="firma_obbligatoria:1"
+    />
+
     <field name="tipologia_firma_id" type="Tipologiafirma" label="Tipologia firma"
       showon="firma_obbligatoria:1" />
     <field name="scadenza" type="CalSafe" label="Data Scadenza Firma"
diff --git a/administrator/sql/updates/1.1.7.sql b/administrator/sql/updates/1.1.7.sql
new file mode 100644
index 0000000..e9929df
--- /dev/null
+++ b/administrator/sql/updates/1.1.7.sql
@@ -0,0 +1,12 @@
+-- tabella ponte: quali gruppi possono firmare quale circolare
+CREATE TABLE IF NOT EXISTS `#__circolari_usergroups` (
+  `circolare_id` INT NOT NULL,
+  `usergroup_id` INT NOT NULL,
+  `required` TINYINT(1) NOT NULL DEFAULT 0,     -- opzionale: firma obbligatoria del gruppo
+  `can_firmare` TINYINT(1) NOT NULL DEFAULT 1,  -- opzionale: futura granularità
+  PRIMARY KEY (`circolare_id`, `usergroup_id`),
+  KEY `idx_group` (`usergroup_id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
+
+
+ALTER TABLE `#__circolari` DROP COLUMN `usergroup_id`;
diff --git a/administrator/src/Model/CircolareModel.php b/administrator/src/Model/CircolareModel.php
index 1ed4c92..ab1f402 100644
--- a/administrator/src/Model/CircolareModel.php
+++ b/administrator/src/Model/CircolareModel.php
@@ -135,6 +135,17 @@ class CircolareModel extends AdminModel
             }
         }
 
+        $id = (int) ($data->id ?? $this->getState($this->getName() . '.id'));
+        if ($id) {
+            $db = Factory::getContainer()->get('DatabaseDriver');
+            $q = $db->getQuery(true)
+                ->select($db->quoteName('usergroup_id'))
+                ->from($db->quoteName('#__circolari_usergroups'))
+                ->where($db->quoteName('circolare_id') . ' = ' . (int) $id);
+            $db->setQuery($q);
+            $data->usergroup_ids = $db->loadColumn() ?: [];
+        }
+
         return $data;
     }
 
@@ -324,4 +335,47 @@ class CircolareModel extends AdminModel
         $this->_db->setQuery($q);
         return ((int) $this->_db->loadResult()) > 0;
     }
+
+    public function save($data)
+    {
+        $ok = parent::save($data);
+        if (!$ok) {
+            return false;
+        }
+
+        $id = (int) $this->getState($this->getName() . '.id');
+        $groups = array_map('intval', $data['usergroup_ids'] ?? []);
+
+        $db = Factory::getContainer()->get('DatabaseDriver');
+        $db->transactionStart();
+
+        try {
+            // ripulisci associazioni esistenti
+            $db->setQuery(
+                $db->getQuery(true)
+                    ->delete($db->quoteName('#__circolari_usergroups'))
+                    ->where($db->quoteName('circolare_id') . ' = ' . (int) $id)
+            )->execute();
+
+            // reinserisci le nuove
+            if (!empty($groups)) {
+                $q = $db->getQuery(true)
+                    ->insert($db->quoteName('#__circolari_usergroups'))
+                    ->columns([$db->quoteName('circolare_id'), $db->quoteName('usergroup_id')]);
+
+                foreach ($groups as $gid) {
+                    $q->values((int) $id . ',' . (int) $gid);
+                }
+                $db->setQuery($q)->execute();
+            }
+
+            $db->transactionCommit();
+        } catch (\Throwable $e) {
+            $db->transactionRollback();
+            $this->setError($e->getMessage());
+            return false;
+        }
+
+        return true;
+    }
 }
diff --git a/administrator/tmpl/circolare/edit.php b/administrator/tmpl/circolare/edit.php
index e9e50e9..bece210 100644
--- a/administrator/tmpl/circolare/edit.php
+++ b/administrator/tmpl/circolare/edit.php
@@ -43,7 +43,7 @@ HTMLHelper::_('bootstrap.tooltip');
 				<?php echo $this->form->renderField('attachment'); ?>
 				<?php echo $this->form->renderField('image'); ?>
 				<?php echo $this->form->renderField('firma_obbligatoria'); ?>
-				<?php echo $this->form->renderField('tipologia_firma_id'); ?>
+				<?php echo $this->form->renderField('usergroup_ids'); ?>
 				<?php echo $this->form->renderField('scadenza'); ?>
 			</fieldset>
 		</div>
diff --git a/administrator/tmpl/circolares/default.php b/administrator/tmpl/circolares/default.php
index b237a5d..2acccb5 100644
--- a/administrator/tmpl/circolares/default.php
+++ b/administrator/tmpl/circolares/default.php
@@ -82,7 +82,7 @@ if (!empty($saveOrder)) {
 
 							<th scope="col" class="w-3 d-none d-lg-table-cell">
 
-								<?php echo HTMLHelper::_('searchtools.sort',  'JGRID_HEADING_ID', 'a.id', $listDirn, $listOrder); ?> </th>
+								<?php echo HTMLHelper::_('searchtools.sort', 'JGRID_HEADING_ID', 'a.id', $listDirn, $listOrder); ?> </th>
 						</tr>
 					</thead>
 					<tfoot>
diff --git a/circolari.xml b/circolari.xml
index 843191a..caf55c4 100644
--- a/circolari.xml
+++ b/circolari.xml
@@ -7,7 +7,7 @@
     <author>Tommaso Cippitelli</author>
     <authorEmail>tommaso.cippitelli@protocollicreativi.it</authorEmail>
     <authorUrl>http://</authorUrl>
-    <version>1.1.6</version>
+    <version>1.1.7</version>
     <description></description>
     <namespace path="src">Pcrt\Component\Circolari</namespace>
     
diff --git a/site/src/Model/CircolareModel.php b/site/src/Model/CircolareModel.php
index d025e98..9a88f6b 100644
--- a/site/src/Model/CircolareModel.php
+++ b/site/src/Model/CircolareModel.php
@@ -1,10 +1,12 @@
 <?php
+
 namespace Pcrt\Component\Circolari\Site\Model;
 
 \defined('_JEXEC') or die;
 
 use Joomla\CMS\MVC\Model\ItemModel;
 use Joomla\CMS\Factory;
+use Joomla\CMS\User\UserHelper;
 
 class CircolareModel extends ItemModel
 {
@@ -55,23 +57,90 @@ class CircolareModel extends ItemModel
 
         return $row ?: null;
     }
-}
 
+    public function getBottoniFirma(int $firmatipoId): array
+    {
+        $buttons = []; // <- sempre inizializzato
 
-/**
- * Incrementa gli hits della circolare.
- */
-public function hit($pk = null)
-{
-    $pk = $pk ?: (int) $this->getState($this->getName() . '.id');
-    if (!$pk) {
-        return false;
+        if ($firmatipoId <= 0) {
+            return $buttons;
+        }
+
+        $db = Factory::getContainer()->get('DatabaseDriver');
+
+        // 1) Tabella relazionale
+        $q = $db->getQuery(true)
+            ->select($db->quoteName(['id', 'label']))
+            ->from($db->quoteName('#__circolari_firmetipi_bottoni'))
+            ->where($db->quoteName('firmatipo_id') . ' = ' . (int) $firmatipoId)
+            ->order($db->escape('ordering ASC, id ASC'));
+        $db->setQuery($q);
+        $buttons = (array) $db->loadObjectList();
+
+        // 2) Fallback JSON
+        if (!$buttons) {
+            $q2 = $db->getQuery(true)
+                ->select($db->quoteName('bottoni_firma'))
+                ->from($db->quoteName('#__circolari_firmetipi'))
+                ->where($db->quoteName('id') . ' = ' . (int) $firmatipoId);
+            $db->setQuery($q2);
+            $json = (string) $db->loadResult();
+
+            if ($json) {
+                $rows = json_decode($json, true) ?: [];
+                foreach ($rows as $r) {
+                    $label = trim((string) ($r['etichetta'] ?? ''));
+                    if ($label !== '') {
+                        $buttons[] = (object) ['id' => 0, 'label' => $label];
+                    }
+                }
+            }
+        }
+
+        return $buttons;
+    }
+
+    public function userCanFirmare(int $circolareId, ?int $userId = null): bool
+    {
+        $user = Factory::getUser($userId);
+        if ($user->guest) {
+            return false;
+        }
+
+        // Gruppi (inclusa ereditarietà). In J4/J5 puoi usare UserHelper::getUserGroups
+        $userGroups = array_map('intval', UserHelper::getUserGroups($user->id));
+        if (!$userGroups) {
+            return false;
+        }
+
+        $db = Factory::getContainer()->get('DatabaseDriver');
+
+        $q = $db->getQuery(true)
+            ->select('COUNT(*)')
+            ->from($db->quoteName('#__circolari_usergroups'))
+            ->where($db->quoteName('circolare_id') . ' = ' . (int) $circolareId)
+            ->where($db->quoteName('usergroup_id') . ' IN (' . implode(',', $userGroups) . ')');
+
+        $db->setQuery($q);
+        return ((int) $db->loadResult()) > 0;
+    }
+
+
+    /**
+     * Incrementa gli hits della circolare.
+     */
+    public function hit($pk = null)
+    {
+        $pk = $pk ?: (int) $this->getState($this->getName() . '.id');
+        if (!$pk) {
+            return false;
+        }
+        $db = $this->getDatabase();
+        $query = $db->getQuery(true)
+            ->update($db->quoteName('#__circolari'))
+            ->set($db->quoteName('hits') . ' = ' . $db->quoteName('hits') . ' + 1')
+            ->where($db->quoteName('id') . ' = ' . (int)$pk);
+        $db->setQuery($query)->execute();
+        return true;
     }
-    $db = $this->getDatabase();
-    $query = $db->getQuery(true)
-        ->update($db->quoteName('#__circolari'))
-        ->set($db->quoteName('hits') . ' = ' . $db->quoteName('hits') . ' + 1')
-        ->where($db->quoteName('id') . ' = ' . (int)$pk);
-    $db->setQuery($query)->execute();
-    return true;
 }
diff --git a/site/src/Model/CircolariModel.php b/site/src/Model/CircolariModel.php
index 391798f..9321b0b 100644
--- a/site/src/Model/CircolariModel.php
+++ b/site/src/Model/CircolariModel.php
@@ -14,14 +14,13 @@ class CircolariModel extends ListModel
     protected $filter_fields = [
         'id', 'c.id',
         'title', 'c.title',
-        'created', 'c.created',
         'hits', 'c.hits',
         'categoria_id', 'c.categoria_id',
         'state', 'c.state',
     ];
 
     protected function populateState($ordering = 'c.created', $direction = 'DESC')
-    {
+        {
         $app = Factory::getApplication();
 
         // paging
@@ -80,9 +79,6 @@ class CircolariModel extends ListModel
         }
 
         // ordinamento
-        $orderCol = $this->getState('list.ordering', 'c.created');
-        $orderDir = $this->getState('list.direction', 'DESC');
-        $q->order($db->escape($orderCol . ' ' . $orderDir));
 
         return $q;
     }
@@ -116,4 +112,4 @@ class CircolariModel extends ListModel
             return \is_object($it) && !empty($it->id);
         }));
     }
-}
+}
\ No newline at end of file
diff --git a/site/src/Service/Router.php b/site/src/Service/Router.php
index 4d32e27..a994bf7 100644
--- a/site/src/Service/Router.php
+++ b/site/src/Service/Router.php
@@ -22,7 +22,7 @@ class Router extends RouterView
         $this->registerView($category);
 
         // Child: circolare (lega la category tramite categoria_id)
-        $circolare = new RouterViewConfiguration('circolare');
+        $circolare = new RouterViewConfiguration('circolari');
         $circolare->setKey('id')->setParent($category, 'categoria_id', 'id');
         $this->registerView($circolare);
 
diff --git a/site/tmpl/circolare/default.php b/site/tmpl/circolare/default.php
index 2844f16..36131ea 100644
--- a/site/tmpl/circolare/default.php
+++ b/site/tmpl/circolare/default.php
@@ -6,6 +6,8 @@ use Joomla\CMS\Language\Text;
 
 /** @var \Pcrt\Component\Circolari\Site\View\Circolare\HtmlView $this */
 $item = $this->item;
+
+$buttons = $this->getModel()->getBottoniFirma((int)$item->tipologia_firma_id);
 ?>
 
 <div class="container my-5 mega-container">
@@ -18,6 +20,18 @@ $item = $this->item;
     <div class="col-md-3 col-12 text-md-end mt-2 mt-md-0">
       <a href="#" class="small text-decoration-none text-uppercase fw-bold">Condividi</a>
     </div>
+
+    <?php if ($item->firma_obbligatoria && $this->getModel()->userCanFirmare($item->id, $this->getModel()->currentUser->id) && !empty($buttons)) : ?>
+      <div class="mt-4">
+        <div class="d-flex flex-wrap gap-2">
+          <?php foreach ($buttons as $btn) : ?>
+            <button type="button" class="btn btn-primary btn-sm">
+              <?php echo htmlspecialchars($btn->label, ENT_QUOTES, 'UTF-8'); ?>
+            </button>
+          <?php endforeach; ?>
+        </div>
+      </div>
+    <?php endif; ?>
     <div class="article-body mt-3">
       <?php echo $item->description ?: $item->testo ?: $item->descrizione ?: '<em>(Nessun testo)</em>'; ?>
     </div>
diff --git a/site/tmpl/circolari/default.php b/site/tmpl/circolari/default.php
index 98dca2d..4fdae4e 100644
--- a/site/tmpl/circolari/default.php
+++ b/site/tmpl/circolari/default.php
@@ -1,67 +1,44 @@
 <?php
-// ... intestazione invariata ...
+\defined('_JEXEC') or die;
+
+use Joomla\CMS\HTML\HTMLHelper;
+use Joomla\CMS\Language\Text;
+
+/** @var \Pcrt\Component\Circolari\Site\View\Circolare\HtmlView $this */
+$item = $this->item;
+dump($item);
+
+$buttons = $this->getModel()->getBottoniFirma((int)$item->tipologia_firma_id);
+dump($this->getModel()->currentUser);
 
-// $listOrder / $listDirn / $filter già come li hai
-$Itemid = (int) ($input->getInt('Itemid') ?: 0);
 ?>
-<form action="<?php echo htmlspecialchars(Uri::getInstance()->toString(), ENT_QUOTES, 'UTF-8'); ?>"
-      method="post"
-      name="adminForm"
-      id="adminForm"
-      class="com-content-category__articles">
 
-    <!-- filtro -->
-    <!-- (invariato) -->
+<div class="container my-5 mega-container">
 
-    <!-- Limite per pagina -->
-    <?php if ($pagination && \method_exists($pagination, 'getLimitBox')) : ?>
-      <div class="com-content-category__pagination btn-group float-end">
-        <label for="limit" class="visually-hidden"><?php echo Text::_('JGLOBAL_DISPLAY_NUM'); ?></label>
-        <?php echo $pagination->getLimitBox(); ?>
-      </div>
-    <?php endif; ?>
-
-    <!-- tabella -->
-    <table class="com-content-category__table category table table-striped table-bordered table-hover mt-3">
-      <thead>
-        <tr>
-          <th scope="col" id="circolari_header_title">
-            <?php echo HTMLHelper::_('grid.sort', 'JGLOBAL_TITLE', 'c.title', $listDirn, $listOrder, null, 'asc', '', 'adminForm'); ?>
-          </th>
-          <th scope="col" id="circolari_header_date" class="small">
-            <?php echo HTMLHelper::_('grid.sort', Text::_('JDATE'), 'c.created', $listDirn, $listOrder, null, 'asc', '', 'adminForm'); ?>
-          </th>
-          <th scope="col" id="circolari_header_attachment" class="text-center">
-            <?php echo Text::_('COM_CIRCOLARI_ATTACHMENT') ?: 'Allegato'; ?>
-          </th>
-          <th scope="col" id="circolari_header_hits" class="text-end">
-            <?php echo HTMLHelper::_('grid.sort', 'JGLOBAL_HITS', 'c.hits', $listDirn, $listOrder, null, 'asc', '', 'adminForm'); ?>
-          </th>
-        </tr>
-      </thead>
-      <!-- tbody invariato -->
-    </table>
-
-    <!-- paginazione -->
-    <?php if ($pagination && $pagination->pagesTotal > 1) : ?>
-      <div class="com-content-category__navigation w-100">
-        <p class="com-content-category__counter counter float-end pt-3 pe-2">
-          <?php echo $pagination->getPagesCounter(); ?>
-        </p>
-        <div class="com-content-category__pagination">
-          <?php echo $pagination->getPagesLinks(); ?>
-        </div>
-      </div>
-    <?php endif; ?>
-
-    <!-- hidden -->
-    <div>
-      <input type="hidden" name="option" value="com_circolari">
-      <input type="hidden" name="view" value="circolari">
-      <?php if ($Itemid) : ?><input type="hidden" name="Itemid" value="<?php echo $Itemid; ?>"><?php endif; ?>
-      <input type="hidden" name="filter_order" value="<?php echo $listOrder; ?>">
-      <input type="hidden" name="filter_order_Dir" value="<?php echo $listDirn; ?>">
-      <input type="hidden" name="limitstart" value="<?php echo (int) ($pagination?->limitstart ?? 0); ?>">
-      <?php echo HTMLHelper::_('form.token'); ?>
+  <div class="row mb-4 align-items-end">
+    <div class="col-md-9 col-12">
+      <h1 class="h2 mb-1"><?= $this->escape($item->title); ?></h1>
     </div>
-</form>
+    
+
+    <div class="col-md-3 col-12 text-md-end mt-2 mt-md-0">
+      <a href="#" class="small text-decoration-none text-uppercase fw-bold">Condividi</a>
+    </div>
+
+    <?php if ( $item->firma_obbligatoria && !empty($buttons)) : ?>
+  <div class="mt-4">
+    <div class="d-flex flex-wrap gap-2">
+      <?php foreach ($buttons as $btn) : ?>
+        <button type="button" class="btn btn-primary btn-sm">
+          <?php echo htmlspecialchars($btn->label, ENT_QUOTES, 'UTF-8'); ?>
+        </button>
+      <?php endforeach; ?>
+    </div>
+  </div>
+<?php endif; ?>
+    <div class="article-body mt-3">
+      <?php echo $item->description ?: $item->testo ?: $item->descrizione ?: '<em>(Nessun testo)</em>'; ?>
+    </div>
+  </div>
+
+</div>
\ No newline at end of file
diff --git a/site/tmpl/circolari/default.xml b/site/tmpl/circolari/default.xml
index c548122..0d9cf1a 100644
--- a/site/tmpl/circolari/default.xml
+++ b/site/tmpl/circolari/default.xml
@@ -1,10 +1,37 @@
 <?xml version="1.0" encoding="utf-8"?>
 <metadata>
-  <layout title="COM_CIRCOLARI_MENU_LIST" option="com_circolari" />
+  <layout title="Lista di categorie Circolari" option="com_circolari">
+    <help key="JHELP_MENUS_MENU_ITEM_GENERIC" />
+  </layout>
+
+  <!-- Parametri che finiscono direttamente nella URL (request) -->
   <fields name="request">
     <fieldset name="request">
+      <!-- Selezione della categoria delle circolari -->
+     <field
+      name="categoria_id"
+      type="sql"
+      label="Categoria"
+      required="true"
+      query="SELECT id AS value, title AS text FROM #__circolari_categorie WHERE state = 1 ORDER BY title"
+      key_field="value"
+      value_field="text"
+      translate="false"
+    />
+
+      <!-- Forza la view corretta -->
       <field name="view" type="hidden" default="circolari" />
-      <field name="categoria_id" type="category" extension="com_content" label="JCATEGORY" required="false" />
+    </fieldset>
+  </fields>
+
+  <!-- Opzioni pagina (facoltative) -->
+  <fields name="params">
+    <fieldset name="advanced" label="JGLOBAL_FIELDSET_ADVANCED">
+      <field name="page_title" type="text" label="JGLOBAL_TITLE" />
+      <field name="show_page_heading" type="radio" default="1" label="JGLOBAL_SHOW_PAGE_HEADING">
+        <option value="1">JYES</option>
+        <option value="0">JNO</option>
+      </field>
     </fieldset>
   </fields>
 </metadata>