SimpleTimeTracker/app/templates/forms/create_user_form.html

<form action="{% url 'create_user' %}" method="post">
    <div class="row">
        <div class="col-12 mb-3">
            <label for="first_name" class="form-label">{{ form.first_name.label }}</label>
            <input type="text" id="first_name" name="first_name" class="form-control {% if form.first_name.errors %}border-danger{% endif %}">
            {% if form.first_name.errors %}
                {% for error in form.first_name.errors %}
                    <div class="text-danger">{{ error }}</div>
                {% endfor %}
            {% endif %}
            <div class="form-text">{{ form.first_name.help_text }}</div>
        </div>
        <div class="col-12 mb-3">
            <label for="last_name" class="form-label">{{ form.last_name.label }}</label>
            <input type="text" id="last_name" name="last_name" class="form-control">
            {% if form.last_name.errors %}
                {% for error in form.first_name.errors %}
                    <div class="text-danger">{{ error }}</div>
                {% endfor %}
            {% endif %}
            <div class="form-text">{{ form.last_name.help_text }}</div>
        </div>
        <div class="col-12 mb-3">
            <label for="pin" class="form-label">{{ form.pin.label }} {{ form.pin.required }}</label>
            <input type="text" id="pin" name="pin" class="form-control">
            {% if form.pin.errors %}
                {% for error in form.pin.errors %}
                    <div class="text-danger">{{ error }}</div>
                {% endfor %}
            {% endif %}
            <div class="form-text">{{ form.pin.help_text }}</div>
        </div>
        <div class="col-12 mb-3 text-center">
            {% csrf_token %}
            <input type="submit"  class="btn btn-dark btn-lg right" value="Create New User">
        </div>
    </div>
</form>