You receives many enquires and needs to be registered and appropriate quotation needs to be prepared/approved and sent to client. When the job is awarded to you, a project is created. Your office HR maintains the staff and their details. Everyone clocks in their attendance against the project and you will know how much man power is spent on each project. Similarly every purchases made are against a project and you will know the cost of material. The cost of men and material makes up the main part of your office operation.