Office space planning describes the methods used to design and arrange office layouts so that staff can work together in departmental and team groupings, providing the best opportunity for efficient work flow, communication and supervision. wikipedia.org

A sketch is a rapidly executed freehand drawing that is not usually intended as a finished work. A sketch may serve a number of purposes: it can be used to record something that the artist sees, develop an idea for later use or as a quick way of graphically demonstrating an image, idea or principal. wikipedia.org