How to create a cinemachine custom camera offset in the aiming direction

Hello,

I am currently working on a top-down shooter game for mobile devices.

I use two dynamic joystics: 1. to control the player movement 2. to control the turret canon direction.

I am using cinemachine virtual camera to follow my player and I'd like to create a subtle camera offset in the aiming direction when my player is shooting.

(Something like in this game: https://www.youtube.com/watch?v=MzGl05pOfdg . See how the camera moves when the tank is shooting)

any idea on how to achieve that?

Thank you very much for your help