If you are looking to pause and resume test execution in the test runner this is how it works.
1. Run your test case as you normally would.
2. Click on the Pause icon on the Test Runner menu or on the Pause test text at the bottom.
3. Click Save and Close
4. When you are ready to resume testing, you will see your test case waiting for you in the Paused state. Select the test case and click on the Resume button