# 333.33 Types of allocation orders.There are three types of allocation orders available for communicating allocation actions.(a) *Set-aside.* A set-aside is an official action that requires a person to reserve materials, services, or facilities capacity in anticipation of the receipt of rated orders.(b) *Directive.* A directive is an official action that requires a person to take or refrain from taking certain actions in accordance with its provisions. For example, a directive can require a person to: Stop or reduce production of an item; prohibit the use of selected materials, services, or facilities; or divert the use of materials, services, or facilities from one purpose to another.(c) *Allotment.* An allotment is an official action that specifies the maximum quantity of a material, service, or facility authorized for a specific use to promote the national defense.