To do a good job in group training, we must first make clear our goals. If there is a manager in the service department, what needs to be done is auxiliary work; If there is only one person in the service department, this responsibility increases the sales management function. Group training is a medium sandwiched between management and sales staff, and its function is like simultaneous interpretation in the United Nations. Instead of translating what others say, the spokesman's opinions are expressed after processing and accepted by the audience.
You can start with learning communication, and of course you need training ability and sales ability.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.