Timing for declaring leadership

[GregWebster]

With the new Hulkbuster card this came up. When do you declare which leadership you are using? It's after deployment, but is it active player declaring first or at the same time?

Edited September 12, 2021 by GregWebster

[Thoras]

If each player has multiple characters with valid Leadership abilities for their squads affiliation, the player with priority declares their choice of Leadership first.