BWD SectionsPro and SectionBox will absolutely do this and is the perfect solution to achieving this in Foundry. There is a huge resource of help on the BWD and many demo files. For demo project files to work in RapidWeaver, they must be made with a theme so it would be pretty much impossible and uneccessary for BWD to make a version with every theme. I use SectionsPro with Foundry and could't imagine building a site without it and the BWD stuff works seamlessly with Foundry.
I use SectionsPro and SectionsBox in most of my Foundry Projects and you can see SectionsBox in action on my most recent Project11 at http://webdeersign.com/pr11demo2/ where the 6 boxes in a grid and the 3 in the footer are created with SectionsBox.
I see that Steve above has provided a project for you, and I would suggest digging into that and ask any questions you have on here. There are a lot of users here very familiar with BWD stacks and Foundry.