Transposing a concert pitch bass clef part for Eb tuba to the equivalent treble clef part

In March 23 2019, the question “I am a first time user and am trying to transpose a bass clef part being played by an Eb tuba to the equivalent part written in treble clef. I need to be able to appropriately navigate through the various menus. Help please?!” got two answers:
“In EDIT----INSTRUMENT, choose the instrument you want and enter it in your score. After simply copy and paste the stave of Tuba Eb in the new stave, and Musescore do all the things, keys, transpose, sharps flats etc” and
“You can also right click on the staff and choose staff/part properties and click the change instruments button above the Instrument name. If you search for Tuba at the bottom of the instruments list you will see the E-flat and B-flat tubas in the treble clef. As Raymond said, all of the transposition will happen automatically when you do this.”
I have the same question, but neither answer seems to apply to Musescore 4, or am I missing something?