  The Monte Carlo for lepton pair production and tau decays consist of KKMC for
lepton pair production, tauola for tau lepton decays and photos for radiative
corrections in decays.
  An effort for adaptation of the system for precision data to be collected at
Belle II experiment lead to extension of phase space generation modules both in
photos and tauola to enable decays and/or radiative corrections of additional
light lepton pairs. The phase-space and matrix element parts of the programs
are separated, that is why extension to processes where lepton pair is produced
through narrow resonances, like dark photon, was straight forward.
  In the present version of tauola, list of tau decay channels is enriched with
multitude of exotic ones, useful for searches of new physics. The hadronic
currents parametrizations of main decay channels is prepared for basic
simulation in the experiment. The basis for future work on precise fits of
hadronic currents including Machine Learning is retained, but development of
necessary software solutions is left for the forthcoming years.
  Presented programs versions are available in stand-alone format from gitlab
or through the basf2 system of Belle II software. Official distribution web
pages, documenting programs tests, are retained but not necessarily up to the
date.
