Reset button
If you scramble the glyphs and want to set them back to their defaults, click on the Reset button at the top right of the Glyphs Tab. In most cases, this will be what you want, but you may have to change a few of the glyphs. After setting all of these, it is recommended that you save this setting as a group in the Glyphs Themes section of the Themes Tab so that you won't have to set them all back manually if you decide to change them again.