Editing of select group of chord symbols

Musescore 2.1.0
Revision 871c8ce
MuseScore 2 portable AppImage
Debian kernel 4.11.6

I am an amateur ukulele player who accompanies hymns. I add chord symbols based on the keyboard/vocal harmonies. Sometimes I like to suggest optional chords, for me or my musician partners to add if our skill level allows.

I prefer the optional chord symbols to appear smaller. In version 2.0, I seem to recall I figured out a way to select and edit the optional chords as a group. When constructing the score, I assign all the optional chord symbols to notes in voice #2, right click one of them, then select>more>samevoice. This would highlight only the chords attached to voice #2 notes. Then I could use the inspector and text styles to set the position, size and appearance.

In version 2.1.0, I try the select>more>samevoice approach, however ALL chord symbols are selected, even if I am trying to only select those attached to voice #2. In the attached file I selected the optional chords by holding the control key and repeatedly clicking on the individual chord symbols. However, this is more tedious, especially if I later decide to change the appearance of only the optional chord symbols again.

Any suggestions?