Dino/Chronology

The Octagram Soars Brightly Arc
At the Walpurgis Banquet that Clayman called, Dino was present, but he was mostly a bystander who didn't do much.

Hero Awakening Arc
After Dagruel kicked Dino out from his home, the Wastelands, Guy Crimson ordered Dino to be an "open spy" who is tasked with monitoring the Jura Tempest Federation's activities. After Rimuru learned of that, he assigned Dino the task of being Ramiris' assistant.