changing global staff size on the fly

[Orm Finnendahl]

Hi,

 is there a way to reduce the global staff size of all staffs in an
orchestral score for selected pages (or a selected region) on the fly
(without having to put the music of these pages into seperate
books/scores or something like that)? I'm on 2.9.15.

(A simple "no" is sufficient in case it's too complex. I think I'd
find a way to deal with it, then).

--
Orm