Lower thirds explained.

A lower third is the graphic overlay at the bottom portion of the broadcast frame that identifies who is on screen, where they are, or what they represent. Name, title, company, city, topic. Every professional live broadcast has them. They look simple. They are the graphics operator role that is hardest to get right under pressure. For a multi-speaker event with 40 presenters across three days, CBA pre-builds every lower third from the speaker manifest before event day: branded template with logo and colour palette locked, correct titles cross-checked against the actual LinkedIn bios, social handles formatted consistently, and Arabic transliteration approved where the speaker requests it. During the event, the graphics operator triggers the right lower third within two seconds of a speaker taking the microphone, holds it for 8-12 seconds, and clears before the presenter begins their main point. We generate lower thirds using vMix graphics, Blackmagic Graphics, or Caspar CG depending on the venue, and we always have a second operator cued up with a backup template stack. The single biggest mistake in live graphics is running a stale lower third that contradicts what the audience is seeing on screen. The second biggest is a typo in a title that the CEO corrects live on air.