Spoken Vocal Part

I have a vocal line which goes from singing to speaking, so I want to write the spoken section on the vocal stave using ‘ghost notes’; I can see how to do that for percussion parts but not for a vocal. Any suggestions?

I tend to use x-noteheads and then suppress playback.

"For example, to change the notehead design of the selected notes to X noteheads, choose Edit > Notehead > Crosses > X Noteheads."