Professional whispered interpreting can be provided to one or two individuals, as they listen to presentations at an event. Normally this is required by visiting speakers at a conference or dignitaries who attend the event and there is no simultaneous interpretation available in their language. It may also be used during visits, where the client is an observer.
If interpreting is required for more than an hour, a team of two interpreters may be required. However, for longer durations, simultaneous interpreting is the preferred option.