You can do so from the Screen's monitoring settings. To access this screen:
1. Click the Gear icon near the top-right corner of the dashboard.
2. Select Monitoring settings.
3. Select a monitoring profile.
4. Click the small Gear icon at the right side of the SCREEN option:
You can change the screen scaling, color mode, frames per second (FPS) etc. that will affect the quality/size of the recordings and the live view mode of the Session Player.
For more information, check out the Editing Screen Settings section on the Teramind User Guide.