When you start the server, a Config will be created in the Profile folder under AmbientSpawnConfig. It will be a bit overwhelming at first - please try included presets (and make sure their relevant mods are added to the server).

The JSON data model looks like this:
Factions -> FACTION_KEY (ie. USSR, FIA...) -> Groups, Vehicles

ForcedFactionKey - Force groups spawned with THIS FACTION to become OTHER FACTION specified by faction key
Groups - Prefabs of Groups to spawn based on Type
Vehicles - Arrays of vehicle prefabs matching filters

Heavy WIP

Ambient Spawn Config

Change enemies in Conflict PVE without dedicated scenario mods

Ambient Spawn Config

1.0.5

1.0.4

1.0.3

1.0.2

1.0.1

1.0.0