LONDON — The organizers of Milan film market Mifed have added an extra day dedicated to premiere screenings at the start of this year’s event.Move follows pressure from leading sales companies in light of their decision to boycott the London Screenings the week before. Mifed’s Saturday Pre-Screenings will take place Nov. 2, with the market itself running Nov. 3-7. The pre-screenings will take place in the Fiera Di Milano, the home of Mifed, rather than in downtown cinemas as in previous years. Nonetheless, sellers will not be allowed to open their offices until the market starts on the Sunday. The Saturday screenings will be reserved for market premieres.