Very simply, I'm trying to create 2 separate shop links in the main menu in v15.

I'm using the ecommerce vehicle theme.

The first link is for 'Vehicles' with a dropdown sub-menu to each model(that can be purchased) in the ecommerce shop.

The second link is for 'Parts' that will take you to the parts ecommerce shop. 

The problem I'm having is to separate these two sections into their own Shop category. At this moment they both link to the same default shop(All products).

Am I missing a basic setup protocol in the categories setup, how can I go about achieving this?

I would like to keep the vehicles and parts separate from one another, if possible. However, they will be the same company so everything will need to be in one Odoo account etc.

I hope this makes sense to what I'm trying to achive.