Some companies may operate different business groups within a single Dynamics instance. Different groups within a company may observe different business closures, such as some holidays may be observed in one country, but not another. Since a Resource's work hours can be affected by business closures, it would be better if business closures could be associated to an organizational unit, so that a business closure did not have to be universal to the instance. Or if a business closure could have a 1:N relationship with organizational units, then that could reduce the number of business closure records an admin would need to maintain.