Press of a button to put task group (TG) into random zig-zag pattern for a set amount of time (say 1 minute), before it resumes the plotted course. To make it easily accessible, perhaps make it a mapboard item. Right-click on the TG, and select "Evade". That way, any player could do it without having to go through assuming command. Maybe make it so that, if there IS a player controlling the TG, the function is disabled for all others. Of course, during the evasive zig-zagging, taking off or landing is challenging to say the least, and it would also throw off gunnery. There's always a trade off.