The red text is just a way to identify the spawn on your code... You should change the Griffin_Character_BP_C
Put this code in your game.ini and Rock Golem will spawn at the Mountains, Griffins at the Grassland
ConfigAddNPCSpawnEntriesContainer=(NPCSpawnEntriesContainerClassString="DinoSpawnEntriesGrassland_C",NPCSpawnEntries=((AnEntryName="Griffin",EntryWeight=0.1,NPCsToSpawnStrings=("Griffin_Character_BP_C"))),NPCSpawnLimits=((NPCClassString="Griffin_Character_BP_C",MaxPercentageOfDesiredNumToAllow=0.05)))
ConfigAddNPCSpawnEntriesContainer=(NPCSpawnEntriesContainerClassString="DinoSpawnEntriesMountain_C",NPCSpawnEntries=((AnEntryName="RockGolem",EntryWeight=0.05,NPCsToSpawnStrings=("RockGolem_Character_BP_C"))),NPCSpawnLimits=((NPCClassString="RockGolem_Character_BP_C",MaxPercentageOfDesiredNumToAllow=0.01)))