Final answer:
The technical director is primarily responsible for overseeing the erection and dismantling of scaffolding, with the master carpenter also playing a role.
Step-by-step explanation:
In the context of scaffold erection and dismantling, the technical director is usually responsible for overseeing the process. They are in charge of building the set and ensuring the safety of the production. Additionally, the master carpenter may also play a role in overseeing the erecting and dismantling of scaffolding, as they are responsible for operating the set safely.