How does the order board work?

The order board is located in the right part of Home Island, but if you don't like its location, you can move it to any free space on Home Island in the same way you can move any building you have constructed. You can use it to exchange different items for energy and certain unique items like moss, obsidian, seeds, and filament. You get these items as soon as you add all 6 orders to the board and tap the Deliver button.