Which chitin.key and/or override resource does EET use?

After putting it off for a while, I'm finally updating my game and reinstalling my mods. I'm going to try EET this time, but I make myself a lot of little custom "mods" and items whenever things strike me. I remember having an issue before with things not showing up properly i.e. edited spells. Which directory do I need to point DLTCEP or NearInfinity to in order to make these?