Notehead change in vocal parts, adding lyrics

I did not have the time to search all given entries, so it might be that someone already has contributed this:

It is common in vocal parts to change noteheads to a cross if something is spoken. I tried to ctrl-click the notes and double-click the cross-head in the palette. The original head did not dissapear, the cross was added.
So I hid the original notehead (right-click, choose hide) and then was able to add the cross.

Annoying: I had to hide one notehead at a time. It would be nice to have a feature to select several notes with ctrl-click and then be able to hide all heads together.

After that, I tried to add lyrics. Ctrl-L did not work, since musescore did not recognize the hidden note as a note for inputting lyrics. So I selected the nearest rest and went to the note where I wanted to start inputting lyrics. Now ctrl-click worked and I could write them as I wished...

Probably, it would be better to first write the lyrics, then change the heads ;-)

By the way: in the process to add the cross to the not yet hidden note, the program did crash several times.