Methods and apparatuses for control of multicast broadcast service (MBS) are disclosed. According to an embodiment, a session management function (SMF) sends, to a user plane function (UPF), a first request for modifying a packet forwarding control protocol (PFCP) session for a protocol data unit (PDU) session associated with an MBS session. The first request comprises an identification of the MBS session. The SMF receives, from the UPF, a first response to the first request.