2. Work order planning and scheduling: the functions of work order planning and scheduling deal with planning the resources for the required maintenance jobs and allocating the available resources. The resources include manpower, material, spare parts and tools. Usually this requires a job of a planner who is well training in productivity methods, time standards, materials, computers and has good communications skills. The scheduling deals with allocation of the available resources at specified points in time. The work order planning requires the existence of a well designed work order system (See 2.6 below).