[SOLVED] Can the size of all fretboard diagrams be changed in the palette?

Hi, first post. I've been learning how to use musescore for a little while now, and have been doing ok with the handbook and searching the forum and have learnt enough to transcribe some scribble into scores. Thanks so much to the developers, the program is great, and transcribing has helped me to learn/reinforce things I should know better.
I have created a custom workspace to add my "own" fretboard diagrams palette (the ones my guitar teacher gives me, where they are different to the ones in the "fretboard diagrams" palette).
I can alter the style or change a format for all elements when I have the diagrams in a score, but in the palettes, I can't figure out whether I can change them all at once, or, if I can, how to. I can right-click on each and increase the content scale in the properties, but is there a way to select them all and make them all bigger? (Also, I have one in the custom fretboard diagram palette that is bigger than the others - I must have dragged it from a score where I'd made it bigger. The properties when it is in the palette say it is content scale 1.00, but if I put it into a score and look at the inspector, it is really 1.40, compared to the "little" ones which really are content scale 1.00. )

Thanks for any help.