Notifications When Technician Enters Request

Is there a way to prevent notifications of new requests when a technician enters in a ticket themselves or if the request is already assigned to a technician? We have several technicians and most enter in a ticket manually, either while on the phone or at the end of the day. Anytime a technician enters a ticket in manually, they will assign it to themselves. There is actually no need for EVERY request to send an email notification to all technicians, especially if that request is already being handled.

We do receive notifications when any request has been put in but we would only like these notifications to go out if a technician has not yet been assigned.

As a follow-up to this, is there also a way to notify all technicians when a request has been either assigned to or picked up by a technician. This would let our management team know that the request is being handled already and would help with a lot of follow-up emails asking if someone has addressed it yet.

Thank you