Template:FAQ:Agent 18

This is not currently possible. All notifications will be sent to all configured destinations. The agent does not (currently) support notification filtering.

There is a preliminary implementation of the snmpNotifyFilterTable which is designed to allow this sort of selective trap direction. However this is not currently active. (The tables are present and can be manipulated and updated, but the information is not consulted).
Documentation on how to use this mechanism will appear once the functionality is working properly.