This feature is available in Ultimate edition only.
A regression suite is a set of related regression tests within a regression plan. The tests are coordinated to ensure proper functional behavior within a given segment of the application.
Click Release > Regression Planning.
From the list on the left, select the Plan Type for which you want to create a regression suite.
Click New Test Suite... to open the New Test Suite window.
Enter a Title that describes the purpose of the test suite. Optionally, you can enter a detailed description, assign an Owner, enter an Estimate, include Reference data, and add a Change Comment.
Click Save. The system adds your new regression suite to the list of plan types on the left, and assigns it a unique ID (RS-nnnnn).