not to sure, but i would assume it is setup like the TRD
to adjust it would be the screws/nuts/whatever they are called on the endcaps. some sort of tool or allan key (etc.) which should be provided will do the job. just turn or so.
(again, i don't have the kaminari race wing so i may be wrong...)
the reason one would adjust their wing (if it is possible) is for say, when you are racing etc.