Changes in filming schedule (AGAIN)

This is turning out to be very stressful indeed! I have to push my filming back another week - which eats into my editing time - because both of my actors are unable to film at the times I've set. It's  not their fault, it's just clashing schedules. Also due to delays in the Year 13s filming, there's no cameras at my disposal so I'm going to film next week instead :-)