Hi Bikash,
The Trend Micro content filtering doesn't have any built-in mechanism for specifying a filtering schedule. However, you can use a time-based ACL as the criteria for specifying which hosts are filtered and when.
You can follow this guide to setup the basic functionality:
https://supportforums.cisco.com/docs/DOC-8028
In that guide, access-list 123 is used to specify which hosts are filtered. You can make this a time-based ACL using the 'time-range' keyword and the policy will only take effect when you are within that time-range.
Hope that helps.
-Mike
