2.AutoCAD. A facilities manager is responsible for planning, designing and managing the physical environment of a building or establishment. This includes space planning, infrastructure planning and maintenance. AutoCAD is computer-aided design software that allows you to create DD.4 drawings and plans. Briefly introduce yourself. Give your employer an overview of who you are so they know you from the start. State what your background is and why you are contacting them. This introductory section can usually be a paragraph no longer than a few sentences.