A workspace is the top-level container for all Test Suites and Runs. When Test Manager is invoked, the user will be asked to choose a workspace file, or to create a new one. The workspace will be used for the lifetime of the program invocation. If a different workspace is required, the program can be shut down and restarted.

When the application is closed down, any elements of the workspace that have been modified will automatically be saved to disk. There are also "Save" and "Save All" menu options available that allow the Test Suites and Runs to be saved to disk without having to close down the application. The "Save" menu option will save the element that is currently selected on the hierarchy view, and all the children of that element. The "Save All" option will save every element of the workspace.

When a new TestSuite is created, it is automatically placed within the current workspace. Alternatively, archived TestSuites may be loaded from disk into the current workspace using the "Load TestSuite" menu option.

Runs are created when all or part of a TestSuite is executed by the application. New Runs are automatically placed within the current workspace. Again, archived Run data may be loaded from disk and imported into the workspace, with the "Load Run" menu option.

TestSuites and Runs must be uniquely named within a workspace, as the name is used to identify these elements.