I noticed its not possible anymore to add skills to a certain player after he played a game or trained. It is automatically assigned now? Thats fine, but can we still decide on what skills they improve?

I was training my keeper for a special skill so he woud be a good one-on-one stopper, but now its on 42/50 and i cant add anything anymore. It took me about 20 days to get it there. Please help me out.