WooCommerce: Only 1 product in cart. Replace if one is added

I am fairly new to WooCommerce so I dont know what could be of use to answer my question, this is why I have not added any codeblocks.

I would like to let customers only add one product to the cart and if they add another product the current product in cart is replaced by the last one.

Do I need to make changes in the code or is it possible with a plugin or WooCommerce setting?

I am looking forward to helpful replies.

Thanks

via Chebli Mohamed