Use the Breaks tab to enter global stops and pass pins. A global stop is a defined intermediate point in a network that forces all paths through the defined point to be “don’t care” paths regardless of any constraint assignment. Setting a pass pin on a module pin enables you to see a path through individual pins, which you are not normally allowed to view a path through.
Note: If you are not careful when you set a stop pin on a module pin, you may set a false path in your design.
Breaks Tab