RC Tank Warfare community hobby forum

Im a bit of a noob with this IR system. I have a bb version of a tiger 1 and i just ripped apart my old henglong Tiger 1 and will use this to build a IR battle tank so me and another guy can have some fun in the office at work. Ill be geting the taigen upper hull and turret for this along with a tk60 board. My question is where is the IR emitter go? and is there one for the machine gun also? I know the clark boards have a machine gun hit sound as well as the main gun hit. How does this work? Also, how good does the aim need to be from the cannon for a hit? and if it uses the same emitter as the machine gun, how will that work if the gun on the hull is facing another direction to the turret?

Many Thanks