SennsLab: How can I set up screen recording?

This is in the "Design" section of SennsLab.  In the "Study Edit" screen, click on the "Behavior" tab.  Select  "Capture Screen" .

Before launching the study a pop up will come out.

If you have more than one screen attached (for example, a laptop and external monitor), choose the screen to be recorded from the drop down menu.  The screens included are defined in Windows display management.