Pre-assignment of project team members can occur for a few reasons. Sometimes specific people are identified in an agreement with a customer or partner. Another reason for pre-assignment is to plan human resource management for the future or over multiple projects or activities. This is most likely when someone has skills or knowledge that are rare or in high demand. Some organization require pre-assignment as a way of determining whether it will be necessary to hire or contract for additional staff or to delay the project until the right staff will be available.