Final answer:
The crew is made aware of mode changes on the FMA through communication and coordination with the director. Costume crews are trained to handle quick changes and costumes are designed to facilitate easy and fast costume changes.
Step-by-step explanation:
During a production, the crew is made aware of mode changes on the FMA through communication and coordination with the director. The director is usually in charge of overseeing all aspects of the production, including costume changes. Complex costume changes are discussed during production meetings so that the director can plan the best time for the actor to exit the stage. Costume crews are trained to handle quick changes, with costumes designed to facilitate easy and fast costume changes, such as using Velcro instead of buttons for fastening.