Yoshida: As an example, imagine you defeat one of the bosses and one item appears in the treasure pool for your eight man party. You perform the "need," "greed," or "pass," as you normally do. If someone obtains a drop, regardless of the selected command, they will not be able to choose "need" or "greed" later on. This condition clears at a specific time. You will be able to obtain an item up to once per week, but you can challenge the area as many times as you want.
http://www.bluegartr.com/threads/119...w-with-Yoshida