5. A manager is in charge of a sub-project of a larger project. The sub-project requires the transfer of paper documents into a computer-based document retrieval system and their subsequent indexing so that they can be accessed via key-words. Optical character readers are to be used for the initial transfer but the text then needs to be clerically checked and corrected by staff. The project is currently scheduled to take twelve months using permanent staff. A small budget is available to hire temporary staff in the case of staff absences through holidays, sickness or temporary transfer to other, more urgent, jobs. Discuss the control system that will need to be in place to control that sub-project.