In-/decrease kerning values universaly?

Hi there,

Anyone knows if its possible to in-/ or decrease the kerning values universaly?

I would like to copy it from one Master to another, increase universaly and work from there.

thank you for your suggestions

Copying works in Window > Kerning. For the other stuff, look into the mekkablue scripts, submenu ‘Kerning’: https://github.com/mekkablue/Glyphs-Scripts/