Definition
A test package is a person and period-oriented view of a test plan. It contains all tests which a tester is to perform in a specified period.
Use
Extensive tests are usually performed by several testers, so you divide the test cases in your test plan into test packages which are work lists for a tester. You can assign a test case to several test packages.
You assign the test package to a tester.
Structure
A test package comprises the test package structure and the test package attributes.
The test package structure is based on the structure of a test plan. The test package structure is defined by selecting the relevant test cases for the test package from among all test cases of the test plan.
Test plan attributes are for test package management.