icingaweb2/application/views/scripts/group/list.phtml

<?php if (! $this->compact): ?>
<div class="controls">
  <?= $this->tabs; ?>
  <?= $this->sortBox; ?>
  <?= $this->limiter; ?>
  <?= $this->paginator; ?>
  <div>
    <?= $this->backendSelection; ?>
    <?= $this->filterEditor; ?>
  </div>
</div>
<?php endif ?>
<div class="content">
<?php

if ($backend === null) {
    echo $this->translate('No backend found which is able to list groups') . '</div>';
    return;
}

if (! isset($groups)) {
    echo $this->translate('Failed to fetch any groups') . '</div>';
    return;
}

if (count($groups) === 0) {
    echo $this->translate('No groups found matching the filter') . '</div>';
    return;
}
?>

<table data-base-target="_next" class="action group-list">
  <thead>
    <tr>
      <th class="group-name"><?= $this->translate('Group'); ?></th>
      <th class="group-parent"><?= $this->translate('Parent'); ?></th>
      <th class="group-created"><?= $this->translate('Created at'); ?></th>
      <th class="group-modified"><?= $this->translate('Last modified'); ?></th>
    </tr>
  </thead>
  <tbody>
  <?php foreach ($groups as $group): ?>
    <tr>
      <td clas="group-name"><?= $this->escape($group->group_name); ?></td>
      <td class="group-parent">
        <?= $group->parent_name === null ? $this->translate('None', 'user.group.parent') : $this->escape($group->parent_name); ?>
      </td>
      <td class="group-created">
        <?= $group->created_at === null ? $this->translate('N/A') : date('d/m/Y g:i A', $group->created_at); ?>
      </td>
      <td class="group-modified">
        <?= $group->last_modified === null ? $this->translate('Never') : date('d/m/Y g:i A', $group->last_modified); ?>
      </td>
    </tr>
  <?php endforeach ?>
  </tbody>
</table>
</div>