Interpreting is a demanding task that requires high levels of concentration. For simultaneous or consecutive in conference settings, interpreters work in teams of two: each interpreter works for around 20-30 minutes before handing the interpretation over to their colleague.
Interpretation may be performed by one interpreter depending on a number of factors, including meeting duration, interpreting mode, degree of technicality, meeting type and agenda oOver-the-phone and video-remote interpretation for daily 1:1 conversations is performed by one interpreter: conversations are shorter - less than 30 minutes or up to one our per call -and tend not to require specific prior preparation for the interpreters
It’s best to consult with an interpreting company like Acolad to determine the appropriate number of interpreters needed for your specific needs.