So is your question where to find the crystarium delivery quests? Theyre in the Crystarium, specifically at the Crystalline Mean. This set of quests was the crafter/gatherer equivalent to the role quests that the combat classes got, so theyre one time each. Botanist and Miner share, but as long as you didnt already do them on Miner then they should be waiting for a Botanist to come along and help with their inquiries.