[rt-users] Disabling and not showing fields

[Tomáš Sára]

Hi everybody,
does anybody have an idea how to make some fields not editable when 
creating a ticket? I need to make noneditable some custom fields and 
even some fields which are not custom. The other thing I would like to 
do is to not show some fields which are not custom fields (e.g."Cc" or 
"admin Cc"). Anybody knows how to do it?

Thanks in advance fo r any reactions,
Tom.