Note that this reference documentation is identical to the help that is displayed in MATLAB when you type “help peermaster”.

  PEERMASTER starts the low-level peer services and switches to master
  mode. After switching to master mode, you can use submit jobs for
  remote execution. The server will not accept jobs to be executed,
  but does accept the output arguments of jobs that have been executed on
  other peers. Note that peercellfun will automatically execute peermaster.
  Use as
  Optional input arguments should be passed as key-value pairs. The
  following options are available to limit the peer network, i.e. to
  form sub-networks.
    group       = string
    allowuser   = {...}
    allowgroup  = {...}
    allowhost   = {...}
    refuseuser   = {...}
    refusegroup  = {...}
    refusehost   = {...}
  The allow options will prevent peers that do not match the requirements
  to be added to the (dynamic) list of known peers. Consequently, these
  options limit which peers know each other. A master will not send jobs
  to peers that it does not know. A slave will not accept jobs from a peer
  that it does not know.