Hello,
You should be able to drag the task bar using the mouse to the desired location. If that is not possible, try right clicking anywhere on the task bar and uncheck "Lock the taskbar" and then drag the task bar the preferred location.
You can lock it after so it does not move by accident.
You can also refer to the help documentation by right clicking on "Start" and choosing "Properties" and selecting "Start Menu" tab. In the bottom of the dialog there should link to help documentation.
Regards,
Rekha Patel
Software Engineer in Test
Product Quality and Online