Looking to make a storefront (online), and have the "add to cart" button redirect your customers to an external site

Site URL: https://www.invisiblematters.co/

Hi, 

I'm in the process of building a website, it's currently set-up as a splash page only for subscriptions. I'm using the Squarespace commerce website template (Kitui) from Squarespace 7.1 to try and have an online storefront that redirects customers to an external site. For this, I need to work out a way to change the 'add to cart' button to a button that redirects to another website. Some products will eventually be able to be bought through the 'online store' via my website, but not all will which is why I need the redirect feature. Can anyone help me with some code for this, or help me work through a work around? 

I'm able to provide password details if someone is able to help. 

Many thanks, 

Naz. 

You can add a Text link in Description, then share link again. We will give the code to remove add to cart, turn text link to button.