A none specific instrument staff

Hi, gang!!!

I don't know if it possible with the today version and I missed how to do it, but there are times when we need to input notes on one staff which is not to any specific instrument (or voice). Just a rhythmic riff, or a melody, or a chord cadence, but just as a visual reference.

Maybe we can or need to use it after a while, or maybe not. But it is intended as a visual reference only (it won't be printed, it won't be played by anyone).

Can we do it today? How? ???

If it is not possible, today... Can the development team add this option on the Instrument Input dialogue window, please? ???

Greetings & Blessings from Chile!!!!!!!

Juan