notifications-admin/app/templates/main_nav.html

<nav class="navigation">
  <ul>
    <li><a href="{{ url_for('.service_dashboard', service_id=service_id) }}">Dashboard</a></li>
  </ul>
  <ul>
    <li><a href="{{ url_for('.send_sms', service_id=service_id) }}">Send text messages</a></li>
    <li><a href="{{ url_for('.send_email', service_id=service_id) }}">Send emails</a></li>
    <li><a href="{{ url_for('.view_jobs', service_id=service_id) }}">Activity</a></li>
    <li><a href="{{ url_for('.manage_service_templates', service_id=service_id) }}">Templates</a></li>
  </ul>
  <ul>
    <li><a href="{{ url_for('.api_keys', service_id=service_id) }}">API keys and documentation</a></li>
  </ul>
  <ul>
    <li><a href="{{ url_for('.manage_users', service_id=service_id) }}">Manage users</a></li>
    <li><a href="{{ url_for('.service_settings', service_id=service_id) }}">Service settings</a></li>
  </ul>
</nav>