Adjusting a font

Hello Glyphs,
After testing my roman and italic, I see the adjustment of the italic is a little to narrow. Do I have to adjust every italic glyph once again, or is there an easy way to adjust the whole lowercase in one time? For example: 5% wider for every value left and right.
Thank you.

You can do that with Glyph > Transform Metrics.

Oke Georg, I’ll try.

What Georg said. Just one piece of advice: add or subtract a unit value, do not change by percentage. It would make no sense for what you want to do.

Oke, Good advise.