Quick questions: How do I add the "BUY NOW FROM AMAZON" button?

Hello,

I am new to the FSB. I wish you can help me in this.

I've been looking everywhere but I still can not find the option to activate the "BUY AMAZON NOW" or "See Amazon" button.

I only have the "ADD TO CART" button at this time.

Please kindly advise on where I can activate that.

You can also refer to the attached image to understand what I mean.

Thanks in advance!

Andrew