To configure the addon, it appears under the Interface/AddOns in-game menu.

The "Verbose Mode" checkbox will print a message in your chat window when an item fails to appear on screen at the start of a loot call, with a brief reason why the item didn't show.

The subsequent "Auto-Pass" checkboxes will automatically pass on anything containing any stats/armor types you check. Some exemptions: All Cloaks in game are considered Cloth type, so this box is ignored for cloaks. Similarly, all weapons show Feral Attack Power for Druids, so the Attack Power box ignores Feral AP.

For loot handlers:

You must be promoted or a raid leader to initiate loot. Likewise you must be promoted/leading to get updates for the results window.

To initiate loot, simply link an item with the /lm command. So /lm [Big Bad Boss Drop] would begin the process.

Each time you initiate an item, a /lm rvc (which stands for raid version check) will be simultaneously done, and you will get a printed list of who in the raid doesn't have a compatible (3.0+) version. This is also a handy reminder if someone is offline, as they won't respond to the version check either.

/random 100 rolls will automatically be tracked and added to the results window while an item is still in progress. This means people without the addon installed can still "Need" on something by just doing a /random 100 when it's called out. Once the allotted time (30 seconds by default, configurable at the top of the .lua file) has ended or everyone has made a decision on the item, the results screen pops up. You can show the results screen any time you like via the /lm results command.

The results screen is automatically sorted by roll/greed level and/or alphabetical order, if no roll was detected for someone or a tie happened.

If on Master Looter mode, you can Master Loot someone an item by opening up the corpse and left-clicking on their name in the results window, which will assign the item currently appearing in the results window to them. You can do an artificial /random 100 for someone (commonly used for the Greed section) by right-clicking their name, and you will emote a random number for them.

There are mouseover tooltips in the results window. On the Need section the tooltip contains the character name, and their roll. On the Greed section the tooltip contains the character name, but the number is their greed priority level.

As of 3.3 there is now a second tab on the results window for people who have already won something. Checking someone's box here will send a command to disable their Need button the next time you begin the loot process, other people checking this off will effectively do nothing, as it is not shared amongst the raid.