Unfortunately, there is no multi page layouts now. We will add it, but no idea about release date.
For now, you can just create 2 pages with the same styles (you can create 1st and then duplicate it and change title and blocks in it), export them, then rename “index.html” in any of archives to some another name, for example, “about.html”. And then just extract both archives in the same directory. Both of your pages will work ok. That happens because our style.css file always contains styles of all blocks in project and sripts.js also contains all scripts that you may need using Startup product.