I interpret Runes, Symbols, Signs, and Circles as requiring a physical writing of the arcana. The Rune/Symbol/Circle list just infuses it with the magic required to hold a subsequent spell.
1. Create Rune/Symbol/Sign/Circle
2. Cast Rune/Symbol/Sign/Circle
3. Cast spell to be stored
Glyphs seem to be "written" on the fly in the air, on a water surface, etc., so I skip #1 for Glyphs.
Finally, Spell Mastery roles using Runes/Symbols/Signs/Circles get bonuses if the Rune/Symbol/Sign/Circle uses more potent materials. E.g. Circle designed to summon a horse might be more potent if made of grain; Circle to protect against the Fey might be more potent if done in salt; etc.