Incoming notification to another phone

Is there a way to put a notification on another phone that a call is coming thru the main and only line. I tried this with a ring group and putting a CID override letting both parties know where its coming from but I don’t want the original extension to display this. This is a manager and secretary. Managers phone should ring normal but the secretary wants to see the call come in and display something(not a BLF) on the phone along with the callers DID to differentiate hers from his…

Im using asterisk Asterisk 11.6.0
CentOS release 6.4 (Final)
Linux EUS-FreePBX-Prod.localdomain 2.6.32-358.14.1.el6.x86_64 #1 SMP Tue Jul 16 23:51:20 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Thank you