They do not spawn in Terran trigger volumes

Hi,
You can try setting 'Off Terrain', under 'Other' to true for that profile.
If it's a custom profile, make sure you were at the desired spawn height when you created the profile,
or go to that location and use the UI to move the profile to where you are.

That should work.

Oh you're using custom spawn points?
Didn't realise that.

They're green so there shouldn't be an issue.
It's definitely not something silly like spawn population is set to 0 for day/night, or UseCustomSpawns being set to false?

Thanks for coming back to explain.

Sounds like you have one profile but want it to have some npcs at terrain level and some underground?
If so your solution should work.

Just for clarity, though, when UseCustomSpawns is set to false, BotReSpawn will try to find random spawn point where the profile is located.
Keep in mind that the profile itself has a location - where you were when you created it.
This can be checked with 'Show All Profiles' in the UI,
and you can move any profile at any time using it's use Move profile here button.
 

If you have Off_Terrain to true and create a profile in a cave or tunnel, for example, BotReSpawn *should* find its random spawnpoints down there instead of at terrain level,
although in many cases the walkable areas are so tight that it fails to find the number you want,
so often custom spawnpoints are the better option.

If you want some variety, so the players don't know the precise spot the npcs will spawn, you could split that up into two profiles.
An above ground profile, and an underground one.
The underground one should have UseCustomSpawns true and spawn amount to 5, but you then have the luxury of adding more spawnpoints than you need, say 10,
and setting ChangeCustomSpawnOnDeath to true.

That would randomise their spawn points a little bit.