Related products module random

[Denisnadal]

Hi,

 

I want to make a random order in this module. In the module appear the same related products in all products of a category. I want the order of the related products are always diferent .

 

For example:

 

https://fontdevida.com/aceites-y-vinagres-ecologicos/56-comprar-aceite-de-lino-ecologico-solnatural.html

 

https://fontdevida.com/aceites-y-vinagres-ecologicos/35-comprar-aceite-de-oliva-arbequina-biologico.html

 

This is my shop

https://fontdevida.com/

 

I can pay for do this. I use a leotheme and 1.5.6.2 version of prestashop.

 

 

thanks