How To Change the Template of the ProductBrowser?

Hello, I have just started using Ecwid and it has been good!

I just have a minor problem. I have a single product with 7 options, each one has 4 or 5 choices and must use radio button for them.

As such, the productbrowser is very long (even on Desktop!) and it takes a lot of scrolls to reach the quantity selector, which I understand is below the options selections by default. It is way more intuitive for my users to choose the quantity first, before they can decide on the various options.

So, how do I move the quantity selector to above the options div? I do not find any option in the admin dashboard, so I assume it must be a HTML template thing. So I went to the github and did not find any hint of where the HTML templates are located.

Please advise, thank you.