If you open multiple tabs, or if you have reduced the size of the main window, then you might not be able to see all the tabs at the top of the main window. The display options at the top of the Runs tab or the Patients tab might also be hidden. You can use the Back and Next arrows that are displayed in the top right corner of the main window to move through all open tabs and change the display focus, and/or view the hidden display options.