I don't understand why people always ask this or have trouble with this...

I simply set my loot type to free for all (using multiboxer v2 automatically when the party is created) and my looting works fine. Main sees everything except alt quest drops. If BoP items drop it automatically asks if I'm sure I want to loot - if I want one of my clones to have items, I just cancel the pickup for those items on my main, then loot the corpse with my alt. With quest drops I just loot with my main then glance at my alt(s) screens to see if the corpse is still sparkly.

Not difficult and requires no additional setup....not sure why people are doing something in more complex ways than this...?