The following chapter of our Assassin's Creed Odyssey solution contains a list of all Ainigmata Ostraka (Ostracons) in the Phokis location. In this section you will find a walkthrough for the following Ainigmata Ostraka: Pressed for Time and A Specific General.
Pressed for Time
Location of Ainigmata Ostraka: Prometheus and the Birth of Humankind. The item is located near the tent.
How to solve: You will find this item not far from a large oil pitcher, close to the leader's house.
A Specific General
Location of Ainigmata Ostraka: Sanctuary of Athena Pronaia, in the temple.
How to solve: In the picture above you will find the exact location. Look for the statue that holds the sword and spear as the only one.