haunted cem

Yo, I was wonderin how to add keys for haunted cem. I watched a vid on how to add the keys, but the guy was like go to realmmanager.cs, world.cs, etc. I tried doing wat he did, but my code was different from his. Instead of doing all dat shit, can I just go to dat1 and:
copy the code for a random dungeon (like lod)
change object id number to some random shit
change dungeon name
rebuild
and play
?
(where do I put the portal and key? At the bottom?)
help plox

I'm gonna bump did till its fixed biches