Problems getting password verification working

[amahlaka]

on the register_user template there is

  {% if register_user_form.password_confirm %}
  <div class="form-group center">{{ render_field_with_errors(register_user_form.password_confirm) }}</div>
  {% endif %}

However I'm trying to find where i can set password_confirm so that i can get that field working properly. i tried making a custom form but it just didn't work at all, and i find the documentation relating to those to be a little bit confusing as well

[jwag956]

You do that my setting: SECURITY_CONFIRMABLE = True when you initialize flask-security