To unload one or more projects, Click the PSCAD tab in the ribbon control bar, hover the mouse pointer over Unload and select Unload Project.
You may also unload a project by either right-clicking on the project title in the workspace window and selecting Unload from the pop-up menu, or by selecting the project in the workspace window and pressing Ctrl + u on your keyboard.
Click the PSCAD tab in the ribbon control bar, hover the mouse pointer over Unload and select Unload All Projects.