I have a collection of an embedded form.

I'd like to customize the embedded form.

I want that each entry of the embedded form to be in 1 line, something like that :

```
    <div class="row">
        <div class="col-sm-6">field1</div>
        <div class="col-sm-6">field2</div>
    </div>

```

But symfony's [doc](http://symfony.com/doc/master/form/form_customization.html#how-to-customize-a-collection-prototype) is, in my opinion, poor for this.

I have a form `ApplicationType` :

```
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('responsables', 'collection', array(
            'label' => ' ',
            'type' => new ApplicationResponsablesType(),
            'allow_add' => true,
            'allow_delete' => true,
            'by_reference' =>false
        ))
        //...

```

And `ApplicationResponsablesType` :

```
public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder
        ->add('type', null, array(
            'required' => true,
        ))
        ->add('id')
    ;

```

I really don't understand how to use `{% block ___ %}`.

my Application `new.html.twig` where I have the form :

```
{% block body -%}
<div class="container">
    <br>

    {{ form_start(form) }}
         {# some other fields #}
         {{ form_row(form.responsables) }}
         {# some other fields #}

         <div class="pull-right">
            {{ form_row(form.submit) }}
         </div>
    {{ form_end(form) }}

{# ... closing block and tags... #}

```

I tried some things but since I didn't understand how it works and what I actually tried, I'll not put it... 

Can anyone help me or lead me ? Thanks!

Edit : 

As you can see on this image :

[![enter image description here](https://i.stack.imgur.com/P5gIx.png)](https://i.stack.imgur.com/P5gIx.png)

On the top there is the first part of Application's form.
And if the user add a lot of Responsable, this is huge. So I'd like to have Type and Uid on the same line.

(Here I'm talking only for responsable, but there is other collection on this form so that's why I'd like to simplify it)