You can store up to ten presets. In the upper rows you can either put in a direction/heading or a Maidenhead Grid Locator. In the lower rows you can give it a name as depicted in the figure above. The respective buttons will show up in the Rotor Control Window.
Beam width: This setting is used to set the beam width for depiction in the Rotor Azimuth Window. For the initial setup leave the other settings here on default.