Note: Not finished. Development frozen.
Requirements: At least the group leader and one other person has to have this installed to work.
Type /sroll or /saferoll to open up the main window. You can set yourself on the "Need" list by pressing "Participate" and the leader can also add other people. He then presses "Roll Result" and the winner gets determined. If the verification process is finished, the roll is guaranteed to be valid.
More coming soon.