I'm using Trac (v0.11), and I'd like to:
How can I do that (scripting, workflows, etc.)?
Thanks
Point 1 is solved using Components, standard Trac entities that can be associated to an automatic assignee of the Ticket.
Point 2 is solved by the powerful BlackMagicTicketTweaks plugin (it hides, disables or changes the name of fields on the Ticket form).