A test session can be started from a test suite's page. In the details window of the specific test suite, there will be a Start Test Session button that can be clicked to begin testing. In order for the button to be accessible, there must be at least one test case in final status linked in the suite,
Users will need to have project permissions to view and edit in the Test Coverage module to perform this action. Depending on the settings of the user's project permissions, they may be able to view all test coverage items or just a subset.