This shows you all the available units you can add to your business listing.
It takes the place of the Business toolbox when you click ‘customize my page’ to enter customize mode.
To add a unit click its name. Once you’ve added it you can customize it (for example choosing what image to display in an image unit) and move it around by drag and drop (for example moving your logo to the head of the page).
You can have one logo unit, all others you can have many of. At any time click ‘preview this page’ to see the page how others see it.