View file users/account/page/components/menu_nav/block_messages.php

<?php if (get('id') != user('ID') && access('block_messages', null) == true) : ?>
<a href="/m/block/block_messages/?id=<?=$account['ID']?>&<?=TOKEN_URL?>">
<?=icons('ban', 18, 'fa-fw')?> <?=lg('Запретить писать')?>
</a>
<?php endif ?>