You can use the ActiveState Perl Package Manager (PPM) to manage your site-specific Perl modules. You must install your site-specific Perl modules outside the OnCommand Workflow Automation (WFA) installation directory to avoid deletion of your Perl modules during a WFA upgrade.
Using the PERL5LIB environment variable, you can configure the Perl interpreter installed on the WFA server to use your Perl modules.
Installation of the Try-Tiny Perl module in the user area at c:\Perl is used as an example in this procedure. This user area is not deleted when you uninstall WFA, and you can reuse the area after WFA is reinstalled or upgraded.