Is there a way to always notify multiple requester when a new request is created?

An example request, when a Supply Chain request comes into service desk I want multiple email addresses to be notified of a new request for Supply Chain. Currently the only way to do this is request anybody creating a request manually enter it in the "emails to notify". Quite often they forgot and the other requesters that would like a notification of a new request do not receive it. I'm looking for a way to always notify a specific group of people when a request is created for that department. I tried business rules but there was nothing to assign an action to a department or business unit selection.

Thanks,

Erick