The term 'Call in a Waiting Room' is a job description for someone who is responsible for managing the waiting room of a business or organization. This person would be responsible for greeting visitors, answering phone calls, and providing general assistance to those in the waiting room. The crossword solutions for this term are 'NEXT', which is a four letter word. This word implies that the person in this role would be responsible for ensuring that visitors are seen in the order they arrive, and that phone calls are answered in a timely manner.