Changing the layout of a custom options page

I think you would need to edit the appropriate stylesheet so that the divs using the class “wrap” float to the left of each other. If “wrap” is being used elsewhere by WordPress I would give this a new name such as “mywrap.” You might also want to give that a width of 20% with 0 padding and 0 margins to make sure they all fit. You might need to experiment a bit to get it to fit.