Activate lieutenants special powers by putting them in your inner circle. At the beginning of the game, only the Right Hand seat is available; 4 more can be unlocked subject to certain requirements.
Right Hand seatEdit
Bonus: Levels up
Bonus: +10% Attack
Bonus: 2x Defense
Bonus: 2x Attack
Requirement: Unlock by reaching Level 100 and unlocking the Captain seat.
Requirement: Unlock by having 500 allies and unlocking the Assassin seat.
Note that the seat sometimes doesn't actually unlock until you next level up.