Rooms intended for exclusive Front Row use - and/or want a modern version of telepresence - usually with the shallow curved table and a single row of seating - should use 21:9. Rooms intended for multiple types of Teams use, non-Front Row, or non-Teams should use 16:9. Front Row can still be used as an option, either in its 16:9 form or as a 21:9 'band' within the 16:9 screen.