Creating 'blank' staves

Suppose I want to create a score with staves not associated with particular instruments (e.g. like Bach’s Art of the Fugue). Just blank empty staves to do with as I will. At the moment I have in mind a score with ‘anonymous’ Treble, Alto, Tenor and Bass clefs.

Typing “blank” in the search box led to

https://www.steinberg.net/forums/viewtopic.php?f=246&t=158613&p=852314&hilit=blank#p852314, which contained

https://www.youtube.com/watch?v=PA8HWsQ9YV0&feature=youtu.be&t=1641