Code:
Index - Leave Blank, it will auto generate a number.
EntryID - The NPC EntryID
ItemID - The EntryID of The item you want it to drop
Percentchance - The Drop Rate, 1 = 1% Drop Chance. If You change the drop rate in world.conf it will be the number times the Drop rate from world.conf
(Example on Percent chance - 1 = 1%, 20 = 20%, Drop Rate times 10 in world.conf + 20% = 20 times 10: 200 Drop chance.)
Heroicpercentchance - Same as Percentchance but for Heroic Raid.
mincount - The minimum amount of the item wich will be dropped
maxcount - The maximum amount of the item wich will be dropped
ffa_loot - Leave blank
Now Restart Your Server And The Loot Will Be On All NPC's With The Choosen EntryID.