To start a testing cycle:
A testing cycle can only be started once. If the testing cycle is already started, this action is disabled. A running testing cycle displays Testing Progress between the start and end date. A testing cycle that has not been started displays Not Started. A finished testing cycle displays Finished.
The Start Testing Cycle dialog box appears.The assigned manual tests are distributed to the manual testers. The testers are notified by email and the tests will display in their Manual Tests Assigned to Me panel on their dashboard.
You can still change a running test, change the product version and build, assign additional tests, remove tests, or move tests between testers after a testing cycle has started.