A wireless device receives messages comprising parameters of a multicast and broadcast service (MBS) session. The parameters indicate hybrid automatic repeat request (HARQ) feedback operations. The HARQ feedback operations comprise a first feedback operation with HARQ feedback being enabled; and a second feedback operation with the HARQ feedback being disabled. A downlink control information (DCI) indicates one of the first or the second feedback operation. The wireless device receives a first DCI scheduling a transport block (TB) of the MBS session; and indicating the first feedback operation. The wireless device transmits, based on the first DCI indicating the first feedback operation, a first HARQ feedback for the TB.