The green cone in the figure above is the beamwidth you set in Rotor -> Preferences -> Presets/UI. Left click on a direction/heading turns the rotor to that heading (short path), right click turns the rotor to the opposite heading (long path). Sun and moon are only shown once they are above your location’s horizon.
You can easily change the windows background to an azimuthal world map with your location in the center:
Hint: Stroke color set to black with its opacity set to 40% and Fill color opacity set to 20% produces a nice looking azimuthal world map:
It works with PDF, JPEG, PNG and TIFF files. CMD-click to change the length of the beamwidth cone.