Page Manager

This module is necessary to configure Panels. Not an easy one... You can use Panelizer instead. Panelizer is easier.

Page Manager works with variant of a display. They overrule the default Drupal display.

Panels

Panels is together with Display suite, capable of structuring your content.

You need Page Manager or Panelizer to do the configuration.

In the content type you use the panilize option.