View safe zones in the monitors

Safe zone guides are for your reference and are not included in previews or export.

Safe zones in Program Monitor
A.
Action-safe zone

B.
Title-safe zone

 Click the Safe Margins button  below the Source Monitor or Program Monitor. Click the button again to remove the safe-zone guides.
The standard action- and title-safe margins are 10% and 20%, respectively. However, you can change the dimensions of the safe zones in the Project Settings dialog box. (See Project Settings dialog box.)