u/econ45

I want to give a general the night fighter skill, which is in the green skilled tactician tree on the bottom left of my screen when I mouse over to level up skills. However, when I select the general, I also see his portrait in the same bottom left of my screen and I can't click the skill I want as it is blocked out by the portrait. There must be a work around as I remember having the same issue last time I played DEI and it did not stop me upgrading generals to night fighters but I can't figure it out how to do it this time around. Can anyone suggest a solution? Thanks for any advice!