*Using the interface

As you see I have worked diligent to get it just right, in the end I'd like it to display the description of a skill in the middle where it says "OA" and to have the skill icons grey'd out before you attain them. I looked at other forums posts and skimmed the developers section for tutorials on the matter but both instances I saw people using objects on the screen rather than using the interface. I do not know how many Powers I will have in-game though the number may be over 10-15 and would like to know if using the interface a good way to go.