2 websites - 1 instance of Joomla - 2 shops

-- HikaShop version -- : 2.6.2
-- Joomla version -- : 3

I have 2 websites and they are both using the same joomla admin.

On my main site I have Hikashop which is fine.

The second website is a specific product site (and different URL) but I want to only show this one product (and all its variations) on this site and have customers purchase them through the normal check-out process. I would still also sell this same product on my main site.

Is this possible - does my explanation make sense?

Thanks - multi site is sorted out but how can use the same instance of Hikashop?

I have website 1 (main website) and website 2 using same database.

I can setup a shop product listing and page, and add to cart on Website 2 which is fine.

Customer can move from one website to the other if they want - although they have to find the links to do this.

If they do this and go from website 2 (which is only selling 1 type of product) and go to website 1 which sells lots of different products, the carts on both sites are effectively the same cart.

Can you create an individual cart for both sites but both using the same database so stock counts, etc are all the same?

Hopefully making myself clear.