A non-transitory computer readable medium stores a program causing a computer to execute a process for synchronous display of a document for use at a conference on multiple terminals connected via a network and for transmission and reception of media data including at least one of audio data and video data. The process includes, in accordance with whether or not each of multiple users has a right to access a document selected by a first user on a first terminal, controlling content for display on multiple terminals used by the multiple users, and controlling transmission and reception of the media data between the first terminal and each of the multiple terminals.