You can reference existing tasks to packages.
To reference an existing task:
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 Task, and then click Add.
The Add Reference: Task window opens.
Provide your search criteria in any of the available fields, and then click Search.
The Add Reference: Task window lists the tasks that match the search criteria you specified.
In the Select Task to View section, select the checkbox for the task you want to add as a reference to the open package, and then click Add.
On the Package page, the References to be added on Save field lists the task you selected.