Chapter 15 Unified Threat Management for FortiOS 5.0 : Web filter : Overriding FortiGuard website categorization : Using Alternate Categories : Configuring Rating Overrides
  
Configuring Rating Overrides
1. Go to Security Profiles > Web Filter > Rating Overrides.
2. Select Create New
3. Type in the URL field the URL of the Website that you wish to recategorize.
4. Select the Lookup Rating button to verify the current categorization that is being assigned to the URL.
5. Change the Category field to one of the more applicable options from the drop down menu.
6. Change the Sub-Category field to a more narrowly defined option within the main category.
7. Select OK.
 
It is usually recommended that you choose a category that you know will be addressed in existing Webfilter profiles so that you will not need to engage in further configuration.