The “Angle between plane and view face” option for the Rosette Plot allows you to view only planes which intersect the viewing plane within a certain angular range.
The default range (45-90 degrees) ensures that only planes which are closer to perpendicular will be displayed on the rosette plot. Planes which are closer to parallel (0-45 degrees) will not be displayed on the rosette plot.
You can set this range to any pair of values between 0 and 90 degrees, although usually you would use the default range so that only planes which are closer to perpendicular would be displayed.
The viewing plane orientation is determined by the “sightline normal to rosette” which by default represents a horizontal plane (trend/plunge of normal = 0/90).