You can now use the visual editor to add & customise components into your pages.
Only the first component is available to add to the Canvas in most component categories (Currently), All Components will be available on the next release.
2.
This button
Opens the component selector
3.
This button
Opens the component toolbar to customise it's styles, layout and components SVG.
4.
This button
Duplicates the selected component into the canvas.
5.
This button
Removes the selected component off the canvas.
6. Finally when you're done editing your page's UI