spawn humans?

[NedLynch]

On your harddrive, usually C.

Go to libraries/documents/1CSoftClub/il-2 sturmovik cliffs of dover,
there you will find a couple of config files, the one named "conf" should be the one. Other configs are named confs, confUser, bldconf, user.

You can open them all and take a look, though they mostly contain your control settings and things like that, which can be changed better from in-game.
bldconf should be for the full mission builder.