Call Screening Dropping Calls

FreePBX v2.9.0

I am trying to implement call screening on individual extensions. Once the feature is activated, if an extension is not answered the caller is dropped and not sent to voice mail.

I am trying to look at alternate implementations of this feature, i.e. dialplan, but as a NOOB, I am having problems determining where to, and how to implement this on an extension basis.

Any help would be appreciated.