Chapter 1 What’s New for FortiOS 5.2.1 : Security Profiles : Application Control : Traffic Shaping Settings
  
Traffic Shaping Settings
Traffic shaping settings can be applied to categories of applications that are part of the application control sensor.
To apply settings, select a category and set it to Traffic Shaping. The Traffic Shaping Settings options will appear, allowing you to select the settings for forward and reverse traffic shaping. These settings will be applied to all categories set to Traffic Shaping in your application control sensor.