Prestashop in subdomain: how to do it?

[cate.88]

Hi,

i've create a new shop with this path:

public_html/shop

 

In the root folder (public_htm) i will insert, in the next future, the main site of the company.

 

Now i have to connect this shop to a subdomain: shop.site.com

 

I'm not the administrator of the domain so i've to ask the mantainer to create a new subdomain and change DNS (i think).

 

Is this proceedings correct?

 

Have i to change the shop url? In wich way? 

 

Is there a more right way to do this?

 

Thanks for your help