The ‘vertical width’(I mean, height) seems to control that area. Can I edit vertical width of multiple characters at once?
I know how to edit one by one, but I don’t know how to edit a lot of characters at once.
Or, do you have any other suggestions to edit that area?
I do not know much about Python, and I just started using Glyphs.
Activate list mode in font view. Vertical metrics were added to the columns in the recent cutting edge versions (Preferences > Updates). Still is not batch editing, but it gives you a list you can go through quickly.