Prevent Automatic add client Names in Owner drop down list

I have enabled email creation via ticket. I noticed that when I create a
ticket manually, i see other names/emails in the Owner drop down. How can i
prevent the system from adding names and list only those users i created
via Configuration->Users->New User

Marie,

I need to know how you have the Queues (A thru D) set up in terms of 

global rights, Group rights to a Queue, and individual user rights. The
RT Essentials book give some guidelines to privileges, but not much info
on all the inter-relations. Basically, you need to make sure that the
only global rights you grant are the type of privileges you want any
privileged or non-privileged user to have and grant the rights involving
"access to tickets", “working on tickets”, and “communication on
tickets” on a Queue by Queue basis for specific groups. This may/may not
involve group rights to custom fields, if you use them, and other
relationships. Hope this helps.

Kenn
LBNL

Marie wrote:

Marie,

Opps. I meant that for Obando. In your case, a name appears on the drop 

down because they have certain ticket ownership rights in the Queue you
are creating the ticket in. Check what groups/individuals have those
kind of rights for that Queue. Hint, it is a lot easier to maintain
rights and privileges by putting users with common access needs in one
group and grant the privileges on a group basis. Hope this helps.

Kenn
LBNL

Marie wrote: