Ascender, descender adjustments

Do I have to adjust every character individually…?
I have a font in progress that has repeating measurements, can i set a measure for all at once…?

Hello and welcome to this forum.

Did you see this?
https://help.fontself.com/en/articles/900365-set-font-metrics-with-illustrator-guides
https://help.fontself.com/en/articles/2040682-size-units-and-scaling

If you need more help, please show your problem with screenshot(s).

Good luck,
– j.