View file templates/admin_tariffs_menu.tpl

<a href="../tariffs/index.php" title="Tariffs">Tariffs</a> | <a href="../tariffs/add.php" title="Add tariff">Add tariff</a> | 
<a href="../tariff_periods/index.php" title="Tariff periods">Tariff periods</a> | <a href="../tariff_periods/add.php" title="Add tariff period">Add tariff period</a> | 
<a href="../discounts/index.php" title="Discounts">Discounts</a> | <a href="../discounts/add.php" title="Add discount">Add discount</a>