Instrument Name: Allow you input a name you like. Its sound is defined by MIDI note number from "The MIDI Specification". The General MIDI (GM) protocol of the specification defines a map between MIDI note number and instrument in order to make instrument sound predictable.
Clear: Allow you to clear the instrument name quickly.
Reset: If the instrument is defined by General MIDI, you can use reset the instrument name to default name.
Note Head: You can change note head for an instrument to make it different from others so that you can easily know the instrument on the score. Note: Drums are usually noted with normal elliptical note heads, cymbals with 'x' note heads and auxiliary percussion with alternative note heads.
Stave Position: You can set stave position for an instrument to make it different from others so that you can easily know the instrument on the score according to its stave position like line and space.