Service Registry cannot be configured during installation (Configure Now).
After a Configure Later installation, the packages are installed and you are ready to perform the configuration tasks for Service Registry. It is recommended that you configure Service Registry as a non-root user. For details, refer toConfiguring Service Registry in Service Registry 3.1 Administration Guide and in particular the task To Configure Service Registry as a Non-Root User Using Custom Properties After a Configure Later Installation in Service Registry 3.1 Administration Guide.