epri-vtn_custom/app/views/application/forms/_fieldset_multi_member.html.erb

<div class="form">
  <fieldset id="<%= heading_string.parameterize %>">
    <h3 class="fieldset-heading"><%= heading_string %></h3>

    <div class="row">
      <% attribute_symbols.each do |attribute_symbol| %>
        <div class="col-md-4">
          <div class="form-group">
            <%= form_obj.label reference_object.class.fields[attribute_symbol].display_name, reference_object.class.fields[attribute_symbol].display_name, class: 'control-label' %><br />
            <%= reference_object.class.fields[attribute_symbol].generate_field(form_obj, errors_object) %>
          </div>
        </div>
      <% end %>
    </div>
  </fieldset>
</div>