If you want to run a specific integration test you can:

• Select it in the Integration Test Runner window and press the button "Run Selected"
• Select it in the Integration Test Runner window, press the right mouse button and select "Run" from the context menu.
• Select it in the Hierarchy window, press the right mouse button and select "Run" from the context menu.

You can run more than one integration test of your choice at a time, just select them together holding the CTRL button on the keyboard.

If you want to run all the integration test in the scene you can:

• Press the button "Run All" in the Integration Test Runner window.