Requester field should not fill in automatically

Hi,

In Zendesk, if you create a new proactive ticket, and forget to fill in the Requester field, the Requester automatically is set to be you (agent) and the ticket is sent. We would like this to be changed in a way that the ticket would not be sent, but rather the field says that you need to fill something there (i.e. an error would appear).

This would be a very beneficial change for us, as sometimes our new agents forget to fill in the field, and the message goes to their own email, before they notice their mistake.