Selecting More Than One Non-Contiguous Note

To add similar dynamics or articulations etc. to more than one note, it's simple to click a note at the start of the selection and then to shift-click a note at the end of the selection, before adding the desired sign to multiple notes.

However, how can one select more than one note when adding the same sign to notes that do not necessarily follow one another? Is there a way of de-selecting selected notes, without all the other selected notes becoming deselected?

Thanks in advance MuseScore Magicians.