Arrange the items from each group on the board, to decide where each ingredient will go. It's easier to place items in bowls first, then build around.
Start to arrange items that go well with one another (like fruit near fruits, crackers near condiments and cheese)
Keep filling the board until all space is taken.
Notes
To make ahead: You can assemble the board the night before and store it in the refrigerator. Cover the board with plastic wrap to protect the ingredients from moisture and odors.