Quoted from:ShadowCT - https://everquest.allakhazam.com/db/npc.html?id=52731
The "Set" nameds spawn in the halls and rooms north of the entry hallway (the area with the northern Thall Va Xakra).
The "Det" nameds spawn in the halls and rooms south of the entry hallway (the area with the southern Thall Va Xakra).
The "Kel" nameds spawn mostly in the deeper parts of the zone, but can also spawn in the first room from either north or south of the entry hallway.
Their spawn points are specific, but I don't have the locations. There are many spawn points, though, so if you just keep killing in these areas, you will eventually get them all.