I can rename the left group, but not the right group, how would I do that for the right group?
You mean in Window > Kerning? I think it does but the UI does not update properly. Have you tried the recent cutting edge versions?
Thanks you’re right it worked
Or try one of Toshi’s scripts: https://github.com/Tosche/Glyphs-Scripts/tree/master/Metrics%20%26%20Kerning
Thanks— have you used them recently in the cutting edge version? Something that hasn’t updated for a year makes me nervous on a cutting edge version…
Yes, it worked fine.