Block other than English language browsing

Hi,

I have been tasked to force all users in the company to use English only as a means tp make official technical/work document. I have tried everything at windows level and it did not work. Also I have to prevent users to browse website which are only in English.

Is there a possibility to do that on Fortinet 100F?

I can block website but this is not what we require.

Thanks

Tazio