sparkfun KIT-14173 Hook-Up Manual page 23

Page 23 of 33
To continue, we must tell the project which boards we wish to use. Start by
clicking the "Add a board" button at the bottom of the page.
This will bring up a list of the available boards. We're going to add our
Button Board first of all, so click anywhere in the "Button" box to add it.
Now, repeat this process two more times, adding an Audio Board and a
Light Board.