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The Monte Carlo for lepton pair production and tau decays consist of KKMC forlepton pair production, tauola for tau lepton decays and photos for radiativecorrections in decays.  An effort for adaptation of the system for precision data to be collected atBelle II experiment lead to extension of phase space generation modules both inphotos and tauola to enable decays and/or radiative corrections of additionallight lepton pairs. The phase-space and matrix element parts of the programsare separated, that is why extension to processes where lepton pair is producedthrough narrow resonances, like dark photon, was straight forward.  In the present version of tauola, list of tau decay channels is enriched withmultitude of exotic ones, useful for searches of new physics. The hadroniccurrents parametrizations of main decay channels is prepared for basicsimulation in the experiment. The basis for future work on precise fits ofhadronic currents including Machine Learning is retained, but development ofnecessary software solutions is left for the forthcoming years.  Presented programs versions are available in stand-alone format from gitlabor through the basf2 system of Belle II software. Official distribution webpages, documenting programs tests, are retained but not necessarily up to thedate.

Monte Carlo Event Generator updates, for tau pair events at Belle II energies