Comparing BOFF skills to player skills makes me a bit confused so you may have to include a screenshot if this doesn't answer your question:
You need to spend a minimum number of points at a lower tier to put points in higher tiers. There is also a minimum bar for ground/space points.
Try putting points in some lower Ground/Space skills to see if that unlocks higher skills. (You don't have to commit to test this out, so as long as you don't hit the Accept button you don't have to worry about messing up your build.)
in your picture, Tovan is as highly promoted as he can get, otherwise he would be YOUR rank. He also has every skill point already spent, so maybe I don't understand your issue.
edit - nvm, I did misunderstand, you mean you can't train yourself higher. I can't see in the picture, but is tactical and engineering as filled out as science? I would assume not, try putting more points into skills and see if the next tier opens up. Like the last poster said, just don't click accept.
Last edited by insanesenator; 05-31-2013 at 04:11 PM.