Approvals. Quick ticket creation

Hi all.

Some questions:

  1. I’ve enabled Approvals (using, all OK, but i
    easly can open/close/etc ticket with pending approval. Why this happens?
  2. How i can hide queue ___Approvals from list of queues on right side
    and from dropdown list of queues near button for ticket creation?
  3. What right user must have to allow change Owner of any ticket?
  4. What right user must have to see not only himself and Nobody in the
    list of Owners in Quick ticket creation but any other users also?