I've been working on the onboard crew to help with spotting and gunnery. The three fire director stations all work independently, and any of them can be AI controlled. The three main guns can be connected to any fire director, so in the extreme case each gun can have a director each and fire at three different targets. Or you could control the top fire director, directing gun Anton and Bruno, shooting at targets ahead, while the AI is controlling the aft fire director, aiming gun Ceasar at targets behind you.