Selective actuation device

Selective actuation device (1) comprising and actuator (5) acting upon an actuation lever (7) that has at least one thrusters element (7b) for the actuation of a first operating group (12, 13) and a cam element (6) mobile between an activation position in which it acts upon a second operating group (9, 10) and a rest position in which the activation of the first operating group (12, 13) is disassociated from the second operating group (9, 10).