Porsche Cups can leave pits at 22:00. At the 12:00 mark they must finish their current flying lap and then return to pits. Ginetta GT4s can leave pits at 10:00 and may remain out until the end of qualifying.
Ginetta drivers being caught by Porsche drivers are not required to move off the racing line. They must remain predictable — hold your line, maintain your pace, and avoid any sudden or reactive movements.
Drivers being lapped by their same car-class must yield when safe to do so, giving the approaching car a reasonable opportunity to pass without defending.