Crown

Give the Crown card to a random player.
Shuffle all 8 Hidden Role cards (Allies or Spies).
Distribute them face down between the other
players (Diplomats). Keep the unused card secret.
All Diplomats show (and see) their Hidden Role
to the Diplomats to their left and right.
After some discussion, the player with the Crown chooses 3 Diplomats.
Those 3 Diplomats reveal their Hidden Role,
if the majority are Allies then Crown and Allies
win, otherwise the Spies win.