Thank you WillJo, this is very helpful! Also there is a way to change the type of unit / civilians that spawn but I also don't know how. Will do a little digging and see what I can find. Thank you so much for this regardless!
FYI there is actually a way to change the appearance of the civilians, check out this video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-QI2CEQi-GZg.html