Rhythmic Marking

I would like to learn how I make the rhythmic markings above the score as shown in the attached image.
I already looked up the manual through the link:
https://musescore.org/en/handbook/3/tools#toggle-rhythmic-slash-notation but so far to no avail. I can make the notes in voices 3 or 4 as directed by the manual but I don't know how to hide the staff lines of these notes that will represent the rhythm in the exact place.
I have several other examples to be performed for didactic purposes.
Any teaching, guidance or help will be of great value!
Hug to everyone!!