The data in these columns show the distribution of cost -- the value in the Total field. If you are doing auto distribution using a distribution profile, these values will be calculated based on the distribution percentages. If you are doing manual distribution, you will enter values into each time period (distributing the amount in the Total column). The Unassigned column will display how much of the Total column is left to be distributed. Unifier displays cost data using the latest exchange rate table.