Key signature repitching

Hi, would it be possible to change the key signature in the repitching style?

I mean, I place Gmajor signature from a palette. Then I change my mind. I select the signature and by using up/down arrows I change it to my liking, instead of dragging a new graphical symbol from the palette.

Repitching should obviously go by two approaches - chromatically and by the circle of fifths and include only standard key signatures (+ enharmonic counterparts like in the case of C-sharp/D-flat )

Thanks