netbox/netbox/templates/users/owner.html

{% extends 'generic/object.html' %}
{% load i18n %}

{% block breadcrumbs %}
  {{ block.super }}
  {% if object.group %}
    <li class="breadcrumb-item">
      <a href="{% url 'users:owner_list' %}?group_id={{ object.group_id }}">{{ object.group }}</a>
    </li>
  {% endif %}
{% endblock %}

{% block subtitle %}{% endblock %}