Есть такая беда с разделением дропа. Есть и рекомендации - вот выдержка с Арреата:
Decide how you are going to divide up the loot. There are a few popular ways to do this:
Players unofficially rotate between items, "you got something last time, now it's my turn."
The Group leader or Master Looter decides which player gets which item.
The least structured method, but unfortunately most popular, is Free-For-All. Whichever player can click on the items the fastest will get those items, if they have room in their backpack. When loot is FFA, often monsters come second as party members race to grab the good loot. Keep in mind that Gold is split so let greedy party members grab up all the gold they want! One thing to watch out for in FFA looting are players who will let other players in the party finish off a monster while they stand there doing nothing waiting for the item to drop. This is not recommended.
Share items among classes that can best use them. You may find a Magic Staff that is worth money to the vendors but do the right thing and let the Sorceress have the Staff if she needs it. Don't be a jerk, if a Sorceress helps you kill a monster, and a Sorceress item drops, let the Sorceress pick it up!
If class-specific items drop, let players of those classes pick them up. Don't pick them up just because you want to see what it is, or because you want to trade it. If a class is helping you, they deserve a cut of the loot. Be fair and let them have their class-specific items. Let the Assassins pick up Katars, let the Sorceress' pick up Orbs and so on. Yes that means you, Barbarians!
Share potions among classes that can best use them. While all classes can use Mana, Health and Rejuvenation potions, some classes need some potions over others. Casters need Mana and Rejuvenation Potions, let them have them. Amazons, and Melee Characters can use Mana/Life Steal while players like Necromancers, Elemental Druids, and Sorceresses have to rely on Potions and their Mana Regeneration.
If you get a good item such as a Set or Unique, stop looting and let other players in the party do the looting from then on. You got your good item so let them get items to make up for it. Don't be a jerk! Share the loot! When you continue to loot items they will be thinking didn't that player just get something good? And they'll be right! You got your item, it's their turn.
Если по-русски - в игре с друзьями (и просто хорошими игроками) никаких недоразумений не возникает - каждый получает то, что ему больше надо. В общих играх кто успел - тот и получил, тут уж ничего не поделаешь.

Варианта существования лидера party, который осуществляет дележку, я не встречал (допускаю, что есть и такое, просто не встречал)