How on the controller to throw a sling shot? (A Plague Tale: Innocence)

Who plays little bitch? How to throw a sling shot stone?
Stone throwing, pot throwing, slingshot and just aim on the left bumper and throw a no button can't!!! There is a combination of some or what? In settings drawn that you should throw in RB but not throws!
The mouse easy? And the controller doesn't work! Help!