Changed the title of the thread to better refer to what it’s about.
First I found there were too many zombies, it was because I was playing with Static Spawn option enabled. Didn’t realise == I didn’t read properly 
I turned that off and am enjoying the game far more.
Now though, I keep coming across Zombie Cops. That’s cool, in this apocalypse scenario I would expect cops and soldiers would be common among the infected. But there’s no Joe Citizen zombies, which I’d like to have as a majority. I’d like to change that, without using the Classic Zombies option if I can.
I’ve looked in the code and the monstergroups.json. mon_zombie is still there, and also as the default for the zombie group. I added it as another line as well, just above the mon_zombie_cop (first in the list) and left the freq and multiplier the same. Though I’m not seeing any in the game. Sorry if I’m being dense, I just don’t get it. There’s the spawn count of 1000, yes? And the multiplier is the amount each particular monster takes from that, yes? And the frequency is a number relating to the other monsters in the group…but by how? A percentage?
Am I right in thinking if you edit the JSON files in folders data -> raw, you don’t actually need to recompile? It’s simply just a data source the code reads to handle what to spawn and how many etc?
Sorry, I’m not trying to be difficult, just trying to understand and tweak it a bit.