Sith/core/templates/core/group_edit.html

{% extends "core/base.html" %}

{% block content %}
<p><a href="{% url 'core:group_list' %}">Back to list</a></p>
    <h2>Edit group</h2>
    <form action="" method="post">
        {% csrf_token %}
        {{ form.as_p }}
        <p><input type="submit" value="Update" /></p>
    </form>
{% endblock %}