Thanks for your answer.
That was what I did.
But I had cloned the layout, so I needed the default.php of the cloned template.
Thanks.

Hi,

To create such block, please go to the folder: templates\t3_bs3_blank\tpls\blocks, duplicate the "spotlight-2.php" and rename to "spotlight-3.php", open that file and edut the position in the file:

<?php if ($this->checkSpotlight('spotlight-3', 'position-9, position-10, position-11, position-12')) : ?>

	<!-- SPOTLIGHT 2 -->

	<div class="container t3-sl t3-sl-2">

		<?php $this->spotlight('spotlight-3', 'position-9, position-10, position-11, position-12') ?>

	</div>

	<!-- //SPOTLIGHT 2 -->

<?php endif ?>

Next, load the block to the default layout (templates\t3_bs3_blank\tpls\default.php), just after the spotlight-2.

<?php $this->loadBlock('spotlight-2') ?>

<?php $this->loadBlock('spotlight-3') ?>

Once done, the layout will be like this: http://easycaptures.com/fs/uploaded/922/0750214607.png

Regards.