 If a seated clerk represented a bank to which money was owed or from which money was receivable, the net amount of cash would change hands, along with checks and paper documents.Thus several such transactions could be conducted simultaneously, across the oval table.When the manager signaled again, this procedure was repeated, so that after about six minutes, the clerks had completed all their assigned transactions and were back to their starting locations, and holding exactly the amount of cash their papers said they should be holding.