You can reference existing packages to a package.
To specify an existing package as a package reference:
Log on to PPM.
Open or create a package.
For information on how to open a package, see Opening Packages from Standard Interface.
Scroll to the References section.
From the New Reference list, select Package (Existing), and then click Add.
The Add References: Package window opens.
Provide your search criteria, and then click Search.
The Package Search Results section lists the packages that match your search criteria.
Select the checkbox for the package that you want to add as a reference, and then click Add.
On the Package page, the References to be added on Save field lists the referenced package.