Adding a button near add to cart button

I want to add a button saying view demo next to the add to cart button on my squarespace template site how would I do that, and can you do it without code?

Hi,

Each product will have a different view demo link or same?

If same, just share link to a product + let me know button style, we can give the code

if different, you can add a view demo in Product Additional Info, then share link to a product where you added it, we can give code to move text next to add to cart