Hello Carlos70,
Thank you for your question today. The Payu Latam module is not part of the core set of modules that come with PrestaShop. It is, however, available on the PretaShop site and is free to use.
First, visit the site to download the module. Click here to go to that page.
After you have downloaded the module to your local machine, simply follow the instructions in our article named "How to install a 3rd party module in Prestashop 1.5"
This should add your module to the list in your PrestaShop admin where you can activate it.
I have followed these steps for the module on a test site and it worked fine. Please let us know if you have any further questions.
Kindest Regards,
Scott M