For #1...Imagine you are sitting in a reception during an ordinary working day. You have a visitor who needs to contact one of the supervisors, managers or shift workers, etc. Explain your skill and ability of how to handle the events. If you receive a complaint from a customer, how do you handle that customer's need. If one of the managers needs to travel, how do you arrange the flights and hotels.
You don't need to describe all the details, but state that you have extensive experiences with such office working environment. List the jobs you have had.
For #2...Imagine you answer the phone as a receptionist during an ordinary working day. The caller may ask for an office tour, some general questions about the office, a specific person in the office, a supervisor, a manager... etc. Explain your experience, ability and skills how to handle the incoming calls.
Again, you don't have to go with all the details, but list the jobs you have had with such working environment.
Hope it helps.
