different carriers for products

[nickosn]

Hi, 

 

i have set up a  prestashop demo and am now configuring the product, shipping etc

One problem I can't figure out and would like your help is this:

 

I have two kind of products : small ones that ship with courier OR carrier2

and big size product I have configured only to use carrier2 

 

Problem is that if I select a 1 small product and 1 big product both carriers show up on checkout. but I don't want to show the courier, only carrier2.

How do I solve this

 

Thanks