1. Bring the scroll and reagents to logistics on Friday night.
2. Hand logistics the required number of reagents, and receive a spellcrafting tag in return.
3. At the time of casting you must be holding the scroll, be able to see to cast, touch a packet to the scroll, and incant "I call forth <celestial power / the power of the earth> to craft the <ritual name> ritual."
4. Tear the tag and hand it to the individual receiving the effect of the ritual, or affix it to the item it was cast on.
5. Notify a marshal of the time of casting as soon as possible. Spellcrafted rituals last either 1 hour or until the next logistics period (will be specified on the scroll).