Lets say you have three test suites and one test suite have 5 test cases. You want to execute all three test suites in different browser instance. When we say different browser instance it means open browser, execute first test suite i.e. all five test cases of test suite one and close the browser. This pattern should be followed for all the selected test suites to execute.
In order to accomplish this, open BeatBlip web application, select your project and go to Settings > Project Settings > Test Environment > test_adapter_reset_per_suite and mark this setting as yes.
Sync your project to BeatBlip agent and execute the selected test suites. Each test suite will execute in a new browser instance.