A system comprising: a camera having a three-dimensional field of view and being configured to sense a position of a first object and a position of a second object in the field of view; and a controller (18, 103, 116) coupled to the camera and configured to: define a first zone within the field of view at a first location and the first zone defining a range of acceptable positions for the first object relative to a position of the camera; define a second zone within the field of view at a second location different from the first location and the second zone defining a range of acceptable positions for the second object relative to the position of the camera; receive the position of the first object and the position of the second object; and execute a graphical user interface configured to aid in positioning of the camera relative to the first and second objects (12, 14) and the graphical user interface being configured to display image representations of: the field of view; the first zone relative to the field of view; the second zone relative to the field of view; the position of the first object relative to the first zone; and the position of the second object relative to the second zone. a camera having a three-dimensional field of view and being configured to sense a position of a first object and a position of a second object in the field of view; and a controller (18, 103, 116) coupled to the camera and configured to: define a first zone within the field of view at a first location and the first zone defining a range of acceptable positions for the first object relative to a position of the camera; define a second zone within the field of view at a second location different from the first location and the second zone defining a range of acceptable positions for the second object relative to the position of the camera; receive the position of the first object and the position of the second object; and execute a graphical user interface configured to aid in positioning of the camera relative to the first and second objects (12, 14) and the graphical user interface being configured to display image representations of: the field of view; the first zone relative to the field of view; the second zone relative to the field of view; the position of the first object relative to the first zone; and the position of the second object relative to the second zone. define a first zone within the field of view at a first location and the first zone defining a range of acceptable positions for the first object relative to a position of the camera; define a second zone within the field of view at a second location different from the first location and the second zone defining a range of acceptable positions for the second object relative to the position of the camera; receive the position of the first object and the position of the second object; and execute a graphical user interface configured to aid in positioning of the camera relative to the first and second objects (12, 14) and the graphical user interface being configured to display image representations of: the field of view; the first zone relative to the field of view; the second zone relative to the field of view; the position of the first object relative to the first zone; and the position of the second object relative to the second zone. the field of view; the first zone relative to the field of view; the second zone relative to the field of view; the position of the first object relative to the first zone; and the position of the second object relative to the second zone.