The PKG preferences in the Solaris admin file describe how Solaris PKGs are deployed on Solaris machines. When you install the Sun Update Connection – Enterprise Agent on a Solaris machine, the path name of the Solaris admin file is /opt/local/uce/agent/config_files/admin.
You can change these parameters in the Preferences -> Host -> PKGs window, to change the parameters individually for a specific host; or you can point Sun Update Connection – Enterprise to your own customized Solaris admin file.