Which folders contain the files for the creature recruitment interface?

Ah, I understand, this isn't the interface, but a scene.

In the UI folder, leave the UIGameRoot.(UIGameRoot) file; it contains information about which recruitment scenes will be in the city.

Leave the Maps folder; it contains recruitment scenes and battle scenes.

In the MapObject folder, leave the files with "chunk" in the name, such as ......(AdvMapTownShared).xdb; these contain information about which scenes will be in the city battle, but this doesn't apply to Orcs; their information is stored in the Stronghold1.(AdvMapTownCombat) file.

Added 7 minutes later
Just make sure everything is in order with the battle scenes, fortifications, and towers afterward.