Me again...

I THINK this was answered to me before but I cannot find it or any other thread (I cant be looking hard enough) that solves this.
I know that when an agent creates a phone ticket it will automatically assign this ticket to the agent that raised it. I do not want this to happen. What I would like is for it to go into the queue unassigned waiting for an agent to pick it up. Just because the agent raised the ticket does not make them responsible for it in our working environment.
Your help, as ever, is much appreciated.
Cheers,
Dan