Disable buy button when not in customer role

I would like to be able to disable the buy button for all customer except those in a specific role. This is for a members group where products are available to members only. However, the product should remain visible to the general public.

Any help is appreciated.

I haven't been able to find any information using forum or web search.

Thanks.

There is an Access Control List option called "Public store. Enable shopping cart" is you disable this ACL in the Guest role and Registered role then a customer cannot add items to the shopping cart which is the same as Disable Buy.
Then you can enable this ACL for a Custom role so the customers in that role can buy items

That's great thanks. I should have looked more carefully.

The requirement has since changed in that some products can be purchased my guests and other members only but viewable by guests.

On the product you can limit availability to a customer role via Customer Roles
See https://docs.nopcommerce.com/en/running-your-store/catalog/products/add-products.html

Thanks again. I have those parameters set but they hide the product rather than the buy now button. The aim is to show the product to guest and have them register as a member before they can buy.

There is another ACL called "Public store. Display Prices", that would disable the buy button too.  But it will of course also hide the prices ;)  Otherwise you would need to customize.