There are two different methods to display information on your smartboard or tv. You can either duplicate or extend. Duplicating displays the same thing that is on your desktop monitor. Extending your display is the same thing as having two monitors, you can display one thing on your smartboard or tv while working on something else on your desktop monitor.
To do either of these hold the Windows key on your keyboard and press the P key.
Select either duplicate or extend.
To use pens on your Smartboard with Windows 10 you will have to select the duplicate function for them to work properly.