PBSPro package on windows does not set proper environment after installation

PBSPro package on windows is not setting correct environment after/during installation:
Current environ set by package after installation:
Following paths added in starting of system PATH environment variable:
PBS_EXEC\python_x64
PBS_EXEC\python_x64\libs
PBS_EXEC\bin
PBS_EXEC\sbin
PBS_EXEC\pgsql\bin
PBS_EXEC\pgsql\lib

New PYTHONPATH variable set to following paths:
PBS_EXEC\python\Lib
PBS_EXEC\python_x64\DLLs

New PBS_CONF_FILE variable set to following path:
PBS_INSTALL_DIR\pbs.conf

New PBS_EXEC variable set to following path:
PBS_EXEC=PBS_INSTALL_DIR\exec

New PBS_HOME variable set to following path:
PBS_HOME=PBS_INSTALL_DIR\home

Expected environment after PBSPro installation:
New PBS_EXEC variable should set to following:
PBS_INSTALL_DIR\exec\

Following paths should be appended (instead of prefixed) to PATH variable:
%PBS_EXEC%\bin
%PBS_EXEC%\sbin
%PBS_EXEC%\lib
%PBS_EXE%\pgsql\bin
%PBS_EXE%\python
%PBS_EXE%\python\Scripts
%PBS_EXE%\python\Lib\site-packages\pywin32_system32

New PBS_CONF_FILE variable should be set to following:
PBS_INSTALL_DIR\pbs.conf