How do I disable Bell/Buzz feature OR Filter the Packets in OpenFire?

I guess this is a three-fold question relaly:

Question 1: How do I disable Bell/Buzz feature OR Filter the Packets in OpenFire?

Question 2 (with some backstory):  I've enable a packet filter in OpenFire for OTR packets, so people can't ecrypt/hide their conversations (using: "\?OTR" as my filter).  Is there a similar way to do this with the Bell/Buzz packets?

Question 3: Is there a way to standardize the configs of my users? So all have toast/notifications turned on, OTR disabled, and certain other features (like add a contact etc)... that can be applied during install or some other stream-lined fashion?

Thanks in advance for any and all help!