How to block Youtube and facebook on fortigate?

This is using Fortigate 110D with firmware 5.2.3. I tried to block the above usages via web filter and URL, but not successful. I heard that i can use application control to stop the above 2 items without problem, is that right? If so, how to block them?

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It may be the same concept as disabling Facebook on Sonicwall.  Have a look here:
MichaelBalackAuthor Commented:
Hi Wayne88,

Settings on Sonicwall is a lot different from Fortigate. I didn't handle sonicwall, so I don't know how to get the settings work in Fortigate.
MichaelBalackAuthor Commented:
Both can use application control on top of the web filter.

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MichaelBalackAuthor Commented:
Using both application control and web filtering, blocking can be achieved without problem.
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