Windows:
To deploy a user exit program, copy it into %ProgramFiles(x86)%\Micro Focus\Enterprise Developer\bin (32-bit) or \bin64 (64-bit) if Enterprise Server is installed as part of Enterprise Developer, and %ProgramFiles(x86)%\Micro Focus\Enterprise Server\bin or \bin64 (64-bit) if Enterprise Server is installed stand alone.
UNIX:
To deploy a user exit program compiled to callable shared object format, copy it into a directory that is on $LD_LIBRARY_PATH (or $LIBPATH on AIX systems).