You reach level 30, 70, or 90. Cyrus summons you to his office and you're off to Aquila. You research each part, realize you need a team, and, standing on the sigil, you click "Team Up." Three people join your quest, the timer runs down, and those three people dash off to fight the Gladiator, the Sand Squid Tentacles, or Cronus. There you stand, unable to team up again for 10 minutes, all because Mt. Olympus doesn't have a separate team up system for folks who want to run the actual dungeon.
KI recently developed a shadow spell we can split four ways. Why not make the sigils in Aquila the same? Introduce an option, a box you can click, after using team up. Are you running Mt. Olympus? Click the "Mt. Olympus" box. Farming Gladiator? Click the "Gladiator" box. Implement the same system for Atlantea and Tartarus. That way, players who want to defeat the secret bosses can do so while not impeding the progress (or creating a penalty) for players who are running the main dungeon.
It's almost time for the next round of updates, and I think it would behoove KI to take a hard look at the team up system in Aquila. If you can do it with a shadow spell, you can do it with the sigils in Aquila.