Please consider adding the UI functionality in Test Studio so users can be able to drill up/down in tests as steps (sub tests) and then go back in the parrent test.
Currently when you double click on a test as step, Test Studio opens the test steps, but there is no option to go back in the parent test. The only workaround is to the Project Tab, and then open the parent test.
It would be much easier and faster if you have back and forward buttons, or Up and Down.